Vintage 1970's Gibson Large Flange Kluson Tuner Ferrule Bushing Gold Plated, I bought this years ago from a former Kalamazoo Gibson employee and am not sure if it was ever used. It has been in a parts box with other metal parts and has minor nicks. The price is for 1 ferrule and am starting the listing with 3 available. 1/4" inside diameter. The pictures are typical of all 3.