Fits Marshall Amplifiers (such as Amp JCM 800 900 2000 Plexi JMP) with all metric and inch size pots Compatible with most potentiometers on market, including 6mm(15/64 inch) solid shaft, coarse spline and fine spline split shaft, 6.35mm(1/4 inch) shaft potentiometers, fit all the America/Asia made pots for guitar bass Inner hole diameter: 6.35mm(1/4 inch), total height: 16mm(5/8inch), top outer diameter: 16mm(5/8 inch), base out diameter: 20mm(25/32 inch).
Please check the sizes before buying Made of ABS plastic, aluminum alloy top. Push on fit, with set screw to secure the knob to the shaft. Please tighten the set screw in line with the split when installing this knob on a split shaft pot
