2 Pcs 36mm Top Rotary Knobs for 6mm Diameter Shaft Potentiometer Product Name : Rotary Knob;Material : Plastic, Metal Color : Black, Silver Tone;Fit for Shaft Hole Dia. : 6mm/ 0.24" Knob Top Diameter : 36mm/1.4";Overall Size : 45 x 20mm/ 1.8" x 0.8"(D*H) Weight : 38g Package Included : 2 x Potentiometer Rotary Knobs