uxcell 40mm x 6mm Potentiometer Knob Volume Cap Knurled Button Silver Tone Product Name: Potentiometer Control Knob Cap; Country of Manufacture: CHINA Material: Aluminium Alloy, Nylon; Net Weight: 13g Package Content: 1 x Potentiometer Control Knob Cap; Main Color: Silver Tone Shaft Hole Diameter: 6mm(0.24") Total Size: 40mm x 18mm(1.5" x 0.7")(Max.D*H)