uxcell Black CNC Machined Solid Aluminum Speaker Radio Volume Knobs 30x25mm Product Name : Speaker Volume Knobs;Material : Aluminum Diameter : 30mm/ 1.18";Height : 25mm/ 0.98" Shaft Hole : 6mm/ 0.2";Color : Black Weight : 44g Package Content : 1 xSpeakerVolumeKnobs