Musiclily Hex Brass 1/4in to 10mm Tuner Conversion Bushings - Set of 6

In this review of the Musiclily conversion bushings the bottom line is simple: these small, machined brass inserts are for players who need a reliable way to fit modern 10mm tuning pegs into vintage 1/4 in string-post holes. The reviewer found them to be precisely sized, sturdy and unobtrusive when installed, making them the single most practical solution for converting vintage style machine heads without drilling or replacing the whole tuner plate. If you want a clean mechanical adapter that holds tuning stability, these are worth considering.

Key Features

• Conversion fit: Inner diameter 6.5mm (1/4 in) lets vintage 1/4 in posts seat securely while the outside adapts to modern 10mm peg holes.
• Compact dimensions: The outside diameter 10.2mm and 10mm height produce a low-profile adapter that does not interfere with string winding or tuner operation.
• Solid brass construction: Made of solid brass for durability and metal-to-metal contact that resists wear better than plated soft alloys.
• Precision CNC processing: Digital CNC machining gives smooth, structured edges and consistent sizing across the set for repeatable installations.
• Hex head modern style: The hex shape matches modern tuner aesthetics and helps keep the bushing aligned in the peg hole under string tension.
• Set of six: Package includes six bushings so a full set of single-line or three-per-side tuners can be converted at once.

Who It's For

This accessory is aimed at guitarists restoring vintage instruments or customizing machines heads who want to use modern tuners without altering the headstock. It is particularly useful for players who have 1/4 in string posts but prefer modern 10mm tuner replacements for improved tuning gear options.

Those who should look elsewhere include anyone with nonstandard or damaged tuner holes that exceed the stated outside diameter, or players seeking a visible aesthetic change rather than a discrete adapter; in such cases full tuner replacement or larger ferrules may be more appropriate.

Pros & Cons

Pros

• Precise inner 6.5mm bore ensures a snug fit on 1/4 in posts for stable seating.
• Solid brass and CNC finish provide durability and consistent sizing across the set.
• Low 10mm height keeps the adapter unobtrusive and preserves tuner geometry.
• Six-piece kit covers a full set of guitar tuners without extra purchases.

Cons

• Outside diameter of 10.2mm may not fit headstocks with worn or oversized holes without light reaming.
• Nickel finish may not match every instrument aesthetic if appearance is a primary concern.

Specifications

Product type	Tuner conversion bushings
Inner diameter	6.5mm (1/4 in)
Outside diameter	10.2mm (13/32 in)
Height	10mm (25/64 in)
Material	Solid brass, nickel finish
Processing	Digital CNC machining
Package	Set of 6 bushings

Our Verdict

These Musiclily conversion bushings are a practical, economical fix for converting vintage 1/4 in tuner posts to modern 10mm peg holes; their solid brass build and CNC finish make them durable and accurately sized, offering reliable performance for most retrofit jobs. Buy them if you need a discreet mechanical adapter to reuse existing machine heads; skip them if your headstock holes are badly worn or you want a visible cosmetic upgrade.

Frequently Asked Questions

Will these fit my vintage tuners?
They fit vintage machine heads with a 1/4 in (6.5mm) string post and will adapt to a 10mm peg hole; measure your posts and holes first.

How many come in a pack?
The package includes six bushings, enough for a full set of single-line or three-per-side tuners.

Are they durable?
Yes, the bushings are solid brass with CNC machining for consistent edges and wear resistance under normal use.