Musiclily Pro Metal Vintage/Modern 6mm to 10mm Guitar Tuner Conversion Bushings Tuning Pegs Adapter Ferrules, Nickel (Set of 6)|Guitar Parts & Accessories| - AliExpress
Fender American Vintage Bass Tuner Bushings 0019509049 001-9509-049
Musiclily Pro 9mm Guitar Tuner Bushings For Electric Guitar Vintage Tuning Pegs Machine Heads, Black (set Of 6) - Guitar Parts & Accessories - AliExpress
Amazon.com: Dopro Metal Nickel 10mm Guitar Tuners Conversion Bushings Ferrules for Vintage Guitar Tuning Keys : Musical Instruments
1920s-style Tuner Bushings - StewMac
8mm Vintage Guitar Machine Head Tuning Peg Tuner Bushings Adapter Ferrules Guitar Parts For Installing Vintage Tuning Keys - Guitar Parts & Accessories - AliExpress
Amazon.com: StewMac Vintage-style Guitar Tuner Bushings, Round Straight, Nickel, Set of 6 : Musical Instruments
6) GOTOH 9.2mm MG Tuner Bushings for Some Fender® Guitar Necks - Nickel | eBay