This nickel-colored conversion bushing measures 10mm in outer diameter and 6.35mm in inner diameter. It's a convenient part for converting a Rotomatic-compatible headstock back to a Kluson-type. It fits GOTOH SD90s and other models, and helps reduce rattle.
These are vintage style, yellow pearl button Gibson tuning machines with threaded bushings that require larger diameter mounting holes than traditional "push-in" bushing tuners.
This tuning peg set is for Steinberger. It uses a straight-pull design that pulls the strings, so there is no need to wind them up and there is no string slippage. Independent clamping knobs secure the string ends in place, eliminating string slippage and allowing for quick string changes.