Ideal for Fender Stratocaster guitar. If your guitar is Squier 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 hole diameter: 6mm(15/64 inch), outer diameter: 25mm (63/64 inch), height: 13mm (33/64 inch) Made of plastic
