Electronic Control Potentiometer Knob For 6 mm Diameter Shaft,Volume Control Knob, Audio knob, Guitar Knob,Electric Guitar Knobs,Encoder Code Switch Knobs 360 degree rotary knob for easily control the potentiometer. Fit for Shaft Hole Diameter:6mm/0.24inch size: 13x17mm Material:Metal colour:Silver Package Contents: 5 x Potentiometer Volume Control Rotary Knob Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.