Check the listing for details. Potentiometer Control Knob Insert Shaft Switch Knobs 11.5x15mm/ 6mm/Black / 5Pcs. Condition: New. Listed at 8.63 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 in multi-turn linear potentiometers, audio equipment, most potentiometers on the market, etc.Good choice for you:The knob has a knurled design around it, which can increase friction when turning and is not easy to slip off.Specification:Material: PlasticShaft Hole Diameter: 6mm / 0.24"Size: 11.5 x 15 mm / 0.45 x 0.59" (D*H)In the package of: 5 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.