Hipshot BT11 FreeRange Xtender Upright Double Bass/Cello Lever Extender/Detuner

Instantly Drop tune your upright bass with a quick flip of a lever! The FreeRange Xtender (pat. pend) attaches between the tailpiece and bridge of your steel string upright bass. With its impressive range, drop as low as A.  Use multiple FreeRange Xtenders to instantly flip from bass to cello tuning! Installation instructions and mounting hardware included.