uxcell 5 Pcs Black Silver Tone 24mm Top Rotary Knobs for 6mm Dia. Shaft Potentiometer Product Name : Rotary Knob;Material : Plastic, Metal Color : Black, Silver Tone;Fit for Shaft Hole Dia. : 6mm/ 15/64" Knob Inner Dia : 22mm/ 0.9";Knob Top Diameter : 24mm/0.9";Screw Hole Depth 12/0.47" Overall Size : 27 x 15mm/ 1.1" x 0.6"(D*H);Weight : 34g Package Included : 5 x Potentiometer Rotary Knobs