Hipshot Grip-Lock 6GLO Locking Guitar Tuners 3+3 - Chrome upgrade

In this review the Hipshot Grip-Lock 6GLO 3+3 tuning machines are judged as a practical, no-drill upgrade for players who want faster string changes and more stable tuning. The single biggest reason to buy is the patented thumb wheel and pin locking system that lets you lock strings quickly without cutting or winding, paired with the included Universal Mounting Plate to retrofit most 3+3 headstocks. For players tired of slow string swaps or slippage, these tuners simplify maintenance and improve tuning precision.

Key Features

• Grip-Lock pin and thumb wheel: Lets you lock strings quickly by pulling the string through the post and tightening the thumb wheel, reducing changeover time and slippage.
• 18:1 tuning ratio: Provides very fine adjustment for precise tuning and smoother incremental changes when dialing in pitch.
• Universal Mounting Plate (UMP): Includes a retrofit plate so these tuners install on many headstocks without additional drilling or screw relocation.
• Compatibility with common peg holes: Designed for 13/32 in (10mm) pegholes and strings up to 0.060 in, making them suitable for most electric guitars.
• Complete hardware kit: The set of six ships with mounting screws, threaded bushings, and washers so users have everything needed for a tidy install.

Who It's For

The Hipshot Grip-Lock 6GLO is ideal for electric guitarists with a 3+3 headstock who want the convenience of locking tuners while retaining a traditional open gear look; its UMP makes it a strong choice for players who prefer to retrofit without drilling. It also suits those who prioritize precise tuning control, since the 18:1 ratio allows tight micro adjustments for intonation-sensitive setups.

Players who should look elsewhere include those with nonstandard peg hole sizes smaller than 13/32 in or guitars that require closed-back or sealed tuners for aesthetic or weight reasons. Also, if you need vintage-correct rectangular housings or exact factory parts, a direct OEM replacement may be preferable.

Pros & Cons

Pros

• Fast, secure string locking using the Grip-Lock pin and thumb wheel reduces winding and slipping.
• High 18:1 ratio gives very fine tuning control for accurate setups.
• Universal Mounting Plate lets you retrofit without drilling, simplifying installation.
• Complete kit includes screws, threaded bushings, and washers for a clean install.

Cons

• Requires compatible 13/32 in pegholes and may not fit guitars with nonstandard hole sizes.
• Open gear cast housing may not match every instrument's vintage aesthetic preference.

Specifications

Our Verdict

The Hipshot Grip-Lock 6GLO 3+3 kit is a smart value for players who want fast string changes, strong tuning stability, and precise adjustment without altering their headstock. The UMP and included hardware remove common installation headaches, making it a practical upgrade for most electric guitars with standard peg holes.

Frequently Asked Questions

Do these tuners require drilling?
Not usually; the included Universal Mounting Plate is designed to retrofit most 3+3 headstocks without drilling.

What peg hole size is required?
They are compatible with 13/32 in (10mm) peg holes and the string post accepts up to 0.060 in string thickness.

How does the locking work?
A pin inside the string post grips the string while a thumb wheel tightens to lock it in place for faster string changes and stable tuning.