Tuner

    Gotoh SG381-07 MG-T Locking Tuners, 3+3 (Chrome)

    Gotoh's SG381 with the traditional Magnum Lock: a thumbscrew on the back clamps the string, so restringing is quicker and tuning holds better.

    28 guitars checked: 19 likely drop-in, 9 needs verification.

    Tuner illustrationIllustration, photo coming soon

    Where to buy

    Thomann

    £56.00In stock
    Buy direct from Thomann

    We may earn a commission if you buy through links on this page. It doesn't change the price you pay. How we make money

    Part specs

    Tuner hole size

    10mm

    Gear ratio

    16:1

    Mounting pattern

    One screw per tuner, set at 45 degrees to the post; hex banjo-bolt bushing

    Fit info is our best reading of published specs and owner reports. Guitars can vary by year and factory, so check your own before you buy. How we check fit

    Guitars we've checked

    28 guitars checked: 19 likely drop-in, 9 needs verification.

    Epiphone Les Paul Custom

    Epiphone

    Les Paul Custom 2020

    Likely drop-in

    A locking set for the 10mm holes modern sealed tuners like this guitar's normally use, though you may need one small screw hole per tuner. Check yours first.

    Why we say this

    Epiphone list Grover Rotomatic 18:1 tuners on this guitar but don't publish the hole size. Modern sealed and locking tuners like these normally sit in 10mm holes. Gotoh's SG381-07 MG-T locking set (SG381-07 MGT L3+R3 C) is sold for 10mm holes, and each tuner is fixed with one screw set at 45 degrees to the post, so if your tuners use two guide pins or a screw in a different spot you may need to drill one small pilot hole per tuner. Take one tuner off and check the hole and where the screw or pins sit before ordering.

    Epiphone SG Standard

    Epiphone

    SG Standard 2020

    Likely drop-in

    A locking set for the 10mm holes modern sealed tuners like this guitar's normally use, though you may need one small screw hole per tuner. Check yours first.

    Why we say this

    Epiphone list Grover Rotomatic tuners on this guitar but don't publish the hole size. Modern sealed and locking tuners like these normally sit in 10mm holes. Gotoh's SG381-07 MG-T locking set (SG381-07 MGT L3+R3 C) is sold for 10mm holes, and each tuner is fixed with one screw set at 45 degrees to the post, so if your tuners use two guide pins or a screw in a different spot you may need to drill one small pilot hole per tuner. Take one tuner off and check the hole and where the screw or pins sit before ordering.

    ESP

    E-II Eclipse 2022

    Likely drop-in

    A locking set for the 10mm holes modern sealed tuners like this guitar's normally use, though you may need one small screw hole per tuner. Check yours first.

    Why we say this

    ESP list Gotoh locking tuners on this guitar but don't publish the hole size. Modern sealed and locking tuners like these normally sit in 10mm holes. Gotoh's SG381-07 MG-T locking set (SG381-07 MGT L3+R3 C) is sold for 10mm holes, and each tuner is fixed with one screw set at 45 degrees to the post, so if your tuners use two guide pins or a screw in a different spot you may need to drill one small pilot hole per tuner. Hipshot note that Eclipse headstocks have their screw holes at 45 degrees to the tuner, the same angle as Gotoh's screw, so the existing holes may line up. Take one tuner off and check the hole and where the screw or pins sit before ordering.

    ESP

    E-II Eclipse EMG 57TW and 66TW

    Likely drop-in

    A locking set for the 10mm holes modern sealed tuners like this guitar's normally use, though you may need one small screw hole per tuner. Check yours first.

    Why we say this

    ESP list Gotoh locking tuners on this guitar but don't publish the hole size. Modern sealed and locking tuners like these normally sit in 10mm holes. Gotoh's SG381-07 MG-T locking set (SG381-07 MGT L3+R3 C) is sold for 10mm holes, and each tuner is fixed with one screw set at 45 degrees to the post, so if your tuners use two guide pins or a screw in a different spot you may need to drill one small pilot hole per tuner. Hipshot note that Eclipse headstocks have their screw holes at 45 degrees to the tuner, the same angle as Gotoh's screw, so the existing holes may line up. Take one tuner off and check the hole and where the screw or pins sit before ordering.

    ESP

    E-II Eclipse EverTune 2022

    Likely drop-in

    A locking set for the 10mm holes modern sealed tuners like this guitar's normally use, though you may need one small screw hole per tuner. Check yours first.

    Why we say this

    ESP list Gotoh locking tuners on this guitar but don't publish the hole size. Modern sealed and locking tuners like these normally sit in 10mm holes. Gotoh's SG381-07 MG-T locking set (SG381-07 MGT L3+R3 C) is sold for 10mm holes, and each tuner is fixed with one screw set at 45 degrees to the post, so if your tuners use two guide pins or a screw in a different spot you may need to drill one small pilot hole per tuner. Hipshot note that Eclipse headstocks have their screw holes at 45 degrees to the tuner, the same angle as Gotoh's screw, so the existing holes may line up. Take one tuner off and check the hole and where the screw or pins sit before ordering.

    ESP

    E-II Eclipse Fluence Modern

    Likely drop-in

    A locking set for the 10mm holes modern sealed tuners like this guitar's normally use, though you may need one small screw hole per tuner. Check yours first.

    Why we say this

    ESP list Gotoh locking tuners on this guitar but don't publish the hole size. Modern sealed and locking tuners like these normally sit in 10mm holes. Gotoh's SG381-07 MG-T locking set (SG381-07 MGT L3+R3 C) is sold for 10mm holes, and each tuner is fixed with one screw set at 45 degrees to the post, so if your tuners use two guide pins or a screw in a different spot you may need to drill one small pilot hole per tuner. Hipshot note that Eclipse headstocks have their screw holes at 45 degrees to the tuner, the same angle as Gotoh's screw, so the existing holes may line up. Take one tuner off and check the hole and where the screw or pins sit before ordering.

    ESP

    E-II Eclipse FR

    Likely drop-in

    A locking set for the 10mm holes modern sealed tuners like this guitar's normally use, though you may need one small screw hole per tuner. Check yours first.

    Why we say this

    ESP list Gotoh locking tuners on this guitar but don't publish the hole size. Modern sealed and locking tuners like these normally sit in 10mm holes. Gotoh's SG381-07 MG-T locking set (SG381-07 MGT L3+R3 C) is sold for 10mm holes, and each tuner is fixed with one screw set at 45 degrees to the post, so if your tuners use two guide pins or a screw in a different spot you may need to drill one small pilot hole per tuner. Hipshot note that Eclipse headstocks have their screw holes at 45 degrees to the tuner, the same angle as Gotoh's screw, so the existing holes may line up. Take one tuner off and check the hole and where the screw or pins sit before ordering.

    ESP

    E-II Eclipse Full Thickness 2022

    Likely drop-in

    A locking set for the 10mm holes modern sealed tuners like this guitar's normally use, though you may need one small screw hole per tuner. Check yours first.

    Why we say this

    ESP list Gotoh locking tuners on this guitar but don't publish the hole size. Modern sealed and locking tuners like these normally sit in 10mm holes. Gotoh's SG381-07 MG-T locking set (SG381-07 MGT L3+R3 C) is sold for 10mm holes, and each tuner is fixed with one screw set at 45 degrees to the post, so if your tuners use two guide pins or a screw in a different spot you may need to drill one small pilot hole per tuner. Hipshot note that Eclipse headstocks have their screw holes at 45 degrees to the tuner, the same angle as Gotoh's screw, so the existing holes may line up. Take one tuner off and check the hole and where the screw or pins sit before ordering.

    ESP

    E-II Eclipse Full Thickness EverTune 2022

    Likely drop-in

    A locking set for the 10mm holes modern sealed tuners like this guitar's normally use, though you may need one small screw hole per tuner. Check yours first.

    Why we say this

    ESP list Gotoh locking tuners on this guitar but don't publish the hole size. Modern sealed and locking tuners like these normally sit in 10mm holes. Gotoh's SG381-07 MG-T locking set (SG381-07 MGT L3+R3 C) is sold for 10mm holes, and each tuner is fixed with one screw set at 45 degrees to the post, so if your tuners use two guide pins or a screw in a different spot you may need to drill one small pilot hole per tuner. Hipshot note that Eclipse headstocks have their screw holes at 45 degrees to the tuner, the same angle as Gotoh's screw, so the existing holes may line up. Take one tuner off and check the hole and where the screw or pins sit before ordering.

    ESP

    E-II Eclipse Full Thickness Fluence

    Likely drop-in

    A locking set for the 10mm holes modern sealed tuners like this guitar's normally use, though you may need one small screw hole per tuner. Check yours first.

    Why we say this

    ESP list Gotoh locking tuners on this guitar but don't publish the hole size. Modern sealed and locking tuners like these normally sit in 10mm holes. Gotoh's SG381-07 MG-T locking set (SG381-07 MGT L3+R3 C) is sold for 10mm holes, and each tuner is fixed with one screw set at 45 degrees to the post, so if your tuners use two guide pins or a screw in a different spot you may need to drill one small pilot hole per tuner. Hipshot note that Eclipse headstocks have their screw holes at 45 degrees to the tuner, the same angle as Gotoh's screw, so the existing holes may line up. Take one tuner off and check the hole and where the screw or pins sit before ordering.

    Gibson

    ES-339 2021

    Likely drop-in

    A locking set for the 10mm holes modern sealed tuners like this guitar's normally use, though you may need one small screw hole per tuner. Check yours first.

    Why we say this

    Gibson list Grover Rotomatic tuners on this guitar but don't publish the hole size. Modern sealed and locking tuners like these normally sit in 10mm holes. Gotoh's SG381-07 MG-T locking set (SG381-07 MGT L3+R3 C) is sold for 10mm holes, and each tuner is fixed with one screw set at 45 degrees to the post, so if your tuners use two guide pins or a screw in a different spot you may need to drill one small pilot hole per tuner. Take one tuner off and check the hole and where the screw or pins sit before ordering.

    Gibson Les Paul Classic

    Gibson

    Les Paul Classic 2023

    Likely drop-in

    A locking set for the 10mm holes modern sealed tuners like this guitar's normally use, though you may need one small screw hole per tuner. Check yours first.

    Why we say this

    Gibson list Grover Rotomatic tuners on this guitar but don't publish the hole size. Modern sealed and locking tuners like these normally sit in 10mm holes. Gotoh's SG381-07 MG-T locking set (SG381-07 MGT L3+R3 C) is sold for 10mm holes, and each tuner is fixed with one screw set at 45 degrees to the post, so if your tuners use two guide pins or a screw in a different spot you may need to drill one small pilot hole per tuner. Take one tuner off and check the hole and where the screw or pins sit before ordering.

    Gibson

    Les Paul Modern 2020

    Likely drop-in

    A locking set for the 10mm holes modern sealed tuners like this guitar's normally use, though you may need one small screw hole per tuner. Check yours first.

    Why we say this

    Gibson list Grover Locking Rotomatic tuners on this guitar but don't publish the hole size. Modern sealed and locking tuners like these normally sit in 10mm holes. Gotoh's SG381-07 MG-T locking set (SG381-07 MGT L3+R3 C) is sold for 10mm holes, and each tuner is fixed with one screw set at 45 degrees to the post, so if your tuners use two guide pins or a screw in a different spot you may need to drill one small pilot hole per tuner. Take one tuner off and check the hole and where the screw or pins sit before ordering.

    Gibson Les Paul Standard '60s Left-Handed

    Gibson

    Les Paul Standard '60s Left-Handed

    Likely drop-in

    A locking set for the 10mm holes modern sealed tuners like this guitar's normally use, though you may need one small screw hole per tuner. Check yours first.

    Why we say this

    Gibson list Grover Rotomatic tuners on this guitar but don't publish the hole size. Modern sealed and locking tuners like these normally sit in 10mm holes. Gotoh's SG381-07 MG-T locking set (SG381-07 MGT L3+R3 C) is sold for 10mm holes, and each tuner is fixed with one screw set at 45 degrees to the post, so if your tuners use two guide pins or a screw in a different spot you may need to drill one small pilot hole per tuner. Take one tuner off and check the hole and where the screw or pins sit before ordering.

    Gibson Les Paul Standard 60s

    Gibson

    Les Paul Standard 60s 2023

    Likely drop-in

    A locking set for the 10mm holes modern sealed tuners like this guitar's normally use, though you may need one small screw hole per tuner. Check yours first.

    Why we say this

    Gibson list Grover Rotomatic tuners on this guitar but don't publish the hole size. Modern sealed and locking tuners like these normally sit in 10mm holes. Gotoh's SG381-07 MG-T locking set (SG381-07 MGT L3+R3 C) is sold for 10mm holes, and each tuner is fixed with one screw set at 45 degrees to the post, so if your tuners use two guide pins or a screw in a different spot you may need to drill one small pilot hole per tuner. Take one tuner off and check the hole and where the screw or pins sit before ordering.

    Gibson SG Standard

    Gibson

    SG Standard 2023

    Likely drop-in

    A locking set for the 10mm holes modern sealed tuners like this guitar's normally use, though you may need one small screw hole per tuner. Check yours first.

    Why we say this

    Gibson list Grover Rotomatic tuners on this guitar but don't publish the hole size. Modern sealed and locking tuners like these normally sit in 10mm holes. Gotoh's SG381-07 MG-T locking set (SG381-07 MGT L3+R3 C) is sold for 10mm holes, and each tuner is fixed with one screw set at 45 degrees to the post, so if your tuners use two guide pins or a screw in a different spot you may need to drill one small pilot hole per tuner. Take one tuner off and check the hole and where the screw or pins sit before ordering.

    Gibson SG Standard Left-Handed

    Gibson

    SG Standard Left-Handed

    Likely drop-in

    A locking set for the 10mm holes modern sealed tuners like this guitar's normally use, though you may need one small screw hole per tuner. Check yours first.

    Why we say this

    Gibson list Grover Rotomatic tuners on this guitar but don't publish the hole size. Modern sealed and locking tuners like these normally sit in 10mm holes. Gotoh's SG381-07 MG-T locking set (SG381-07 MGT L3+R3 C) is sold for 10mm holes, and each tuner is fixed with one screw set at 45 degrees to the post, so if your tuners use two guide pins or a screw in a different spot you may need to drill one small pilot hole per tuner. Take one tuner off and check the hole and where the screw or pins sit before ordering.

    Schecter

    C-1 Hellraiser 2022

    Likely drop-in

    A locking set for the 10mm holes modern sealed tuners like this guitar's normally use, though you may need one small screw hole per tuner. Check yours first.

    Why we say this

    Schecter list Schecter locking tuners on this guitar but don't publish the hole size. Modern sealed and locking tuners like these normally sit in 10mm holes. Gotoh's SG381-07 MG-T locking set (SG381-07 MGT L3+R3 C) is sold for 10mm holes, and each tuner is fixed with one screw set at 45 degrees to the post, so if your tuners use two guide pins or a screw in a different spot you may need to drill one small pilot hole per tuner. Take one tuner off and check the hole and where the screw or pins sit before ordering.

    Yamaha Revstar RSS20

    Yamaha

    Revstar RSS20 2022

    Likely drop-in

    A locking set for the 10mm holes modern sealed tuners like this guitar's normally use, though you may need one small screw hole per tuner. Check yours first.

    Why we say this

    Yamaha list die-cast tuners on this guitar but don't publish the hole size. Modern sealed and locking tuners like these normally sit in 10mm holes. Gotoh's SG381-07 MG-T locking set (SG381-07 MGT L3+R3 C) is sold for 10mm holes, and each tuner is fixed with one screw set at 45 degrees to the post, so if your tuners use two guide pins or a screw in a different spot you may need to drill one small pilot hole per tuner. Take one tuner off and check the hole and where the screw or pins sit before ordering.

    Epiphone ES-335

    Epiphone

    ES-335 2021

    Needs verification

    A locking upgrade built for 10mm holes. Epiphone don't publish this guitar's hole size and it may be smaller, so measure one before buying: 10mm is a straight swap, anything smaller needs reaming.

    Why we say this

    Gotoh specify a 10mm bore for the SG381 housing. Epiphone list the standard ES-335 with Epiphone Deluxe tuners and don't publish the hole size, so it isn't known whether the holes are the modern 10mm or a smaller vintage size. Take one tuner off and measure: 10mm means it drops in, anything smaller means the holes need reaming.

    Epiphone Jimi Hendrix Flying V Left-Handed

    Epiphone

    Jimi Hendrix Flying V Left-Handed

    Needs verification

    Not confirmed. Epiphone don't publish this guitar's tuner hole size or screw position, so measure yours before buying.

    Why we say this

    Epiphone don't publish the tuner hole size or mounting for this guitar. Gotoh's SG381 is fixed with one screw set at 45 degrees to the post, and retailers list it for 10mm holes. The listing we link doesn't give Gotoh's full part number. Take one tuner off, measure the hole and check where the screw or pins sit before ordering.

    Epiphone Les Paul Standard 50s

    Epiphone

    Les Paul Standard 50s 2020

    Needs verification

    A locking upgrade built for 10mm holes. Some owners report 10mm on this guitar, but Epiphone don't publish it and it may be smaller. Measure one before buying.

    Why we say this

    Built for a 10mm tuner hole. Epiphone list this model with Epiphone Vintage Deluxe tuners and don't publish the hole size. Some owners report 10mm holes, but vintage-style tuners can sit in smaller holes. Take one tuner off and measure: 10mm means it drops in, anything smaller means the holes need reaming.

    ESP LTD EC-1000

    ESP

    LTD EC-1000 2023

    Needs verification

    The tuner hole size matches, but this guitar's screw mounting pattern is angled differently from a standard mount.

    Why we say this

    LTD EC series shares the same Eclipse-body headstock design, nonstandard angled screw mount.

    ESP LTD Viper 400

    ESP

    LTD Viper 400 2021

    Needs verification

    ESP list Grover tuners on this guitar but don't say which model, so the hole size isn't confirmed. Measure your tuner holes before buying.

    Why we say this

    Listings reproducing ESP's spec for the LTD Viper-400 give the tuners only as Grover, with no model named, and ESP don't publish the tuner hole size. This set needs 10mm holes. Take one tuner off and measure the hole in your headstock before ordering.

    Gibson

    ES-335 2021

    Needs verification

    A locking upgrade built for 10mm holes. Gibson fit Vintage Deluxe tuners to this guitar and don't publish the hole size, which may be smaller. Measure one before buying.

    Why we say this

    Gotoh specify a 10mm bore for the SG381 housing. Gibson list this guitar with Vintage Deluxe tuners with keystone buttons and don't publish the hole size. Gibson's Deluxe-style tuners come in push-in bushing versions, which sit in smaller vintage holes, and screw-in bushing versions, which need larger holes, so the hole size on this guitar isn't known. Take one tuner off and measure: 10mm means a straight swap, anything smaller means reaming.

    Gibson

    Flying V 2019

    Needs verification

    Not confirmed. Gibson don't publish this guitar's tuner hole size or screw position, so measure yours before buying.

    Why we say this

    Gibson don't publish the tuner hole size or mounting for this guitar. Gotoh's SG381 is fixed with one screw set at 45 degrees to the post, and retailers list it for 10mm holes. The listing we link doesn't give Gotoh's full part number. Take one tuner off, measure the hole and check where the screw or pins sit before ordering.

    Gibson SG Standard 61

    Gibson

    SG Standard 61 2023

    Needs verification

    A locking upgrade built for 10mm holes. Gibson fit Vintage Deluxe tuners to this guitar and don't publish the hole size, which may be smaller. Measure one before buying.

    Why we say this

    Gotoh specify a 10mm bore for the SG381 housing. Gibson list this guitar with Vintage Deluxe tuners with keystone buttons and don't publish the hole size. Gibson's Deluxe-style tuners come in push-in bushing versions, which sit in smaller vintage holes, and screw-in bushing versions, which need larger holes, so the hole size on this guitar isn't known. Take one tuner off and measure: 10mm means a straight swap, anything smaller means reaming.

    Gretsch

    G6120T 2022

    Needs verification

    Hole size should be close, but Gretsch tuner mounting patterns vary by model and this one has not been confirmed.

    Why we say this

    Gretsch tuner mounting conventions vary by model and this has not been confirmed for the G6120T specifically.

    This page has 9 open questions

    If you have fitted any of these to this Gotoh SG381-07 MG-T Locking Tuners, 3+3 (Chrome), tell us what you found and we'll update the data.