Item Type: Guitar Control Knob Material: Plastic 1Smart Control: Ensuring firm locking in places, the rotating knob enables better control on the potentiometer to adjust tome, volume, etc. 2Better Design: Moreover, engraved design together with pretty colour makes the control knob a great decoration in your guitar performance. 33Pcs in Total: There are 3pcs potentiometer cover in all, and the standard size make the replacement of old and damaged parts much easier. 4Good Material: Adopting premium plastic material with a sturdy structure, the control cover has excellent durability for long term using. 5Easy to Install: Light in weight and compact in size, the installation of the guitar knob is very simple and can be quickly completed.3 x Guitar Control Knob