Ideal for Fender Jazz Bass style bass. If your bass is other style and use imperial inch size 24-splines pots, it will work as well Inch size, fine 24 splines, will fit most American made 6mm(15/64 inch) split shaft potentiometers like CTS/Fender/DiMarzio/Bourns, will NOT fit metric size potentiometers like Alpha Inner diameter: 6mm (15/64 inch) Made of plastic Set of 3 (2 large and 1 small knobs )
