Are you looking for a professional, yet affordable guitar amp knob? Are you in search of a sturdy, trustworthy tool that can do multiple jobs at once? If yes, look no further! These guitar amp knobs may meet your needs. They are a good choice for you. Color: As shown in the picture. Size: 1.7 x 1.5 x 1.5 cm. Material: Plastic. Made of quality material, durable in use. Fit for D-type shaft pots of most bass guitar. Lightweight, easy to carry and use. If your knobs are dirty, dingy and old, or just want to dress up your guitar...these will work great. Vintage and classical style. Plastic control potentiometer knob to be assembled to a potentiometer for easier rotation. Dear buyer, due to lighting effect, monitor's brightness, manual measurement, etc., there could be some slight differences in the color and size between the photo and the actual item. Sincerely hope that you can understand! Thank you! Package includes: 4 x guitar amp knob