What is this?This potentiometer knob is stylish and durable, designed for guitar amplifiers, effects and audio equipment. Widely used in guitar effect pedals, electric guitars, synthesizers, amplifiers, audio equipment, to control tone, volume, speed, sound, etc. It can fit tightly with standard potentiometers while adding a modern and beautiful look to your equipment.What will I get?Guitar Pedal KnobsColor:BlueMaterial:PlasticHeight:15mm/0.59 inchBase diameter:19mm/0.75 inchAperture:6.4mm/0.