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. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store