These and practical knobs and wrenches are used for instruments. If your knobs are dirty, old, or just want to dress up your guitar. These knobs will be great replacements. Fine craftsmanship without burrs. Do not hesitate to take them! Features -Color:Assorted Color -Material: Metal -Size: About 1.90X1.90X1.90cm/0.75X0.75X0.75inch - Replacement parts for electric guitars. The product design is , and the workmanship is fine. - Can control the effects of multiple functions, suitable for electric guitars, electric bass, etc. - Used to replace dirty or old guitar knobs and decorate your guitar. Easy to install and easy to use. - These professional instrument control knobs must meet your needs. Convenient to carry, easy to replace when going out. - Knob and wrench set is made of premium and durable metal material, durable, can withstand the long time using. Package list: 2 x guitar knobs 2 x knob wrenches