Ideal for USA made electric guitar, like LP, SG, ES-335 etc. If your guitar is Epiphone style and use imperial inch size split shaft 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), base outer diameter: 26mm(1-1/32 inch), height: 13mm(33/64 inch) Made of acrylic
