Use the Hipshot BT2 Bass Xtender to drop-tune your bass with a flick of the lever. It makes your bass tunable from E to Low C. Installation instructions and mounting hardware included.
Retrofit your USA '67-'82 Fender P & J Bass for drop tuning! Also retrofits Geddy Lee, reissue '67-'82 Fender.
Features

Fits 11/16 headstock holes.
Direct replacement for the Schaller® BMF tuner that was first found on post-CBS Fender basses manufactured between 1967 and 1982.
Stainless steel key prevents tarnishing and rust where you touch the tuner the most
Drop tune your bass in seconds
Tuning ratio: 27:1

Item Shown: Hipshot BT2 Clover Key Nickel Bass Xtender
Model #: 20200N
UPC: 787392888934