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.
The PMMH-010 Kluson-style tuning machines are engraved with the GIBSON DELUXE logo. They feature a nickel-colored finish and a traditional look, while also featuring a nut mount for a more stable installation.