Drop tune your Music Man or G & L with the BT1.
Drop tune your USA '67-'82 Fender P & J Bass with the BT2.
Drop tune your pre-CBS Fender equipped with reverse winding Kluson tuning machines.
"D" tune your Mexican made Fender with our BT7 Xtender key.
Extend the range of your bass with the ultralite Xtender Key!
Retrofits Gotoh GB7 tuning machines. Fits many Ibanez, Yamaha, Epiphone, Peavey, Modulus, Schecter, and Warwick bass guitars.
Retrofits Schaller M4 mini bass tuning machines.
Retrofits 2008 and newer Fender American Standard Precision and Jazz Bass 4 string models.
Instantly Drop tune your upright bass with a quick flip of a lever!
Retrofit your Japanese made Fender for drop tuning with our BT10 Xtender key.