Description 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:Red, yellow, white, green, blue -Material:Plastic -Size:1.40X1.40X1.50cm/0.55X0.55X0.59in -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 switch, 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 new as the original. - Electronic control potentiometer knob is suitable for 6 mm diameter shaft, volume control knob, audio knob, guitar knob, etc. Packing list50 x volume control knobs