This volume control knob is made of plastic material, which can withstand long-lasting use. These knob caps feature ease of installation and use, which improves overall product usability, perfect for electric guitars, electric bass, and etc. Features -Color:Assorted Color -Material:Plastic - Size: 1.50X1.40X1.40cm/0.59X0.55X0.55in -Type: 6mm Insert Shaft - Made of plastic material, rotary knob replacements have good grip and excellent touching feeling. - Rotary knob always use as volume control , good replacement parts for your loved electric guitars. - Rotary knob has a wide of application. Adequate quantity can easily meet your daily use and replacement needs. - Use these rotary knob to replace your old, worn, or missing knobs, and let it look the original. - Electronic control potentiometer knob is suitable for 6 mm diameter shaft, volume control knob, audio knob, guitar knob, etc. Package list: volume control knobs