Check the listing for details. Potentiometer Control Knob Insert Shaft D Switch Knobs 19x17mm 6mm Black 10Pcs. Condition: New. Listed at 11.96 USD. About the product:The potentiometer knob refers to the twist knob installed on the potentiometer, which is mainly used for the volume. Widely used for D-type 6mm Diameter Shaft, Volume Control Knob, Audio knob, Guitar Knob, and so on.Good choice for you:The potentiometer volume switches control knob is assembled on the potentiometer, which is more convenient to rotate.Specification:Material: PlasticShaft Hole Diameter: 6mm / 0.24"Size: 19 x 17 mm / 0.75 x 0.67" (D*H)In the package of: 10 Pack x Potentiometer Rotary KnobsEasy to install:You just need to insert the potentiometer directly. Fast and convenient installation fastening, smooth rotation, positive rotation.Tips:Please kindly note that the potentiometer is not included here.