Tuner

Sperzel Trim-Lok Locking Tuners (6-in-line, Staggered, Left-Handed)

Sperzel's Left Hand/Reverse 6-in-line Trim-Lok set, built for mirrored left-handed headstocks so the graduated post heights land on the correct strings.

4 guitars checked: 3 likely drop-in, 1 needs verification.

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Where to buy

Amazon

Price not publishedIn stock

Being re-verified

View at Amazon

Part specs

Tuner hole size

10mm

Confirmed

Mounting pattern

Single-pin mount, no separate mounting screw needed. Staggered/graduated post heights in Left Hand/Reverse configuration, for left-handed 6-in-line headstocks that do not tilt back. Confirmed via Sperzel and authorized-distributor product listings (Sperzel explicitly sells this as a distinct Left Hand/Reverse SKU).

Confirmed

Gear ratio

12:1

Confirmed

Guitars we've checked

4 guitars checked: 3 likely drop-in, 1 needs verification.

Fender

American Professional II Stratocaster Left-Handed

Likely drop-in

These tuners can be physically reversed for left-handed use, a real design feature, not a separate part number. The exact hole size on this guitar hasn't been manufacturer-confirmed, so there is a small chance of a snug rather than perfect fit.

Why we say this

Sperzel's Trim-Lok tuners are field-reversible between right-handed and left-handed mounting by design, so the same product serves this guitar directly without needing a separate left-handed SKU. The same roughly 10.26mm hole-size question that applies to this guitar family generally still applies here, a single forum figure, not manufacturer-confirmed.

Fender

Player II Telecaster Left-Handed

Likely drop-in

These tuners can be physically reversed for left-handed use, a real design feature, not a separate part number. A tech can set these up correctly for this guitar.

Why we say this

Sperzel's Trim-Lok tuners are field-reversible between right-handed and left-handed mounting by design, a genuine feature of the tuner shaft itself rather than a separate SKU, so the same product serves left-handed players directly.

Fender

Player Stratocaster Left-Handed

Likely drop-in

These tuners can be physically reversed for left-handed use, a real design feature, not a separate part number, and this guitar's confirmed tuner bore matches this line directly.

Why we say this

Sperzel's Trim-Lok tuners are field-reversible between right-handed and left-handed mounting by design, so the same product serves this guitar without needing a separate SKU. This guitar's headstock uses a confirmed 10mm bore per multiple owner and forum measurements, matching this tuner line's standard bore.

Squier

Sonic Stratocaster Left-Handed

Needs verification

These tuners can be physically reversed for left-handed use, a real design feature, not a separate part number. This guitar's tuner hole size isn't published, so measure before buying to be sure.

Why we say this

Sperzel's Trim-Lok tuners are field-reversible between right-handed and left-handed mounting by design, so the same product serves this guitar without needing a separate SKU. This guitar's exact tuner hole size is not published though, so bore match cannot be fully confirmed.

Help confirm this fit

This page has 1 open question

If you have fitted any of these to this Trim-Lok Locking Tuners (6-in-line, Staggered, Left-Handed), tell us what you found and we'll update the data.