uxcell Aluminum Alloy Potentiometer Control Volume Knobs Cap 10x15.5mm 40pcs Product Name: Potentiometer Knob; Country of Manufacture: CHINA Material: Aluminum Alloy; Net Weight: 60g Package Content: 40 x Potentiometer Knob; Main Color: Black Shaft Hole Dia.: 6mm/0.24" Overall Size: 10 x 15.5mm/0.4" x 0.61"(D*H)