Alnicov 5PCS Guitar Amp Amplifier Push On Fit Knobs Black With Gold Aluminum Cap Top Fits 6Mm Diameter Pots Amplifiers

Material: knobs is made of ABS (plastic); cap is made of Aluminum Total Height: about 15.6mm; Outer diameter at the top: about 15.6mm; Outer diameter at the base: about 19.5mm Fits Marshall Amplifiers (such as Amp JCM 800 900 2000 Plexi JMP.) with 6mm to 6.5mm Shaft Pots, these knobs DO not fit 'D' shaft Pots Push on fit, no brass insert or set screw Due to the wide variety of amplifiers and parts in the market, Please confirm the size before buying