Feature:1. Easy Adjustment: This string knob allows for easier adjustment on the tone, volume, potentiometer, etc. to meet your needs.2. Practical Using: Enables wide application on a variety of guitars, electric guitars, bass guitars and so on, very useful.3. Good Decoration: Simple in style but pretty in colour, the control knob is also a beautiful decoration for your instrument.4. 3Pcs in the Set: With 3pcs controller knob in the set, which largely simplifies the replacement of old and damaged parts.5. Attached Wrench: Comes with a light weight and a compact size, the installation is very convenient with the wrench attached.Specification:Item Type: Electric Guitar Knob.Package List:3 xElectric Guitar Knob1 x Wrench