10 x 14mm Nonslip Black Lamp Dimmer Control Knob Cap for 6mm Dia Shaft Product Name : SwitchKnob;Shaft Hole Dia. : 6mm/ 1/4" Overall Size : 14mm x 15mm/0.55" x 0.59"(D*H);Material : Plastic, Metal Color : Black Weight : 23g Package Included : 10 x SwitchKnob