Audio Knobs, Easy To Install Fine Workmanship Volume Control Knob, Comfort for Instrument Lovers Electric Guitars Specification: Features: Premium aluminum alloy construction ensures durability. The knob is designed for comfort and anti-slipping. Compatible with most of any electric guitars. Perfect gift for musical instrument lovers. Characteristic and exquisite design with pleasant color. Specification: Condition: Material: Aluminum Alloy Size: Approx.1.8x1.8x1.8cm / 0.71x0.71x0.71in Color: Red Diameter of Inner Installation Hole: 5mm / 0.2in Package List: 3x Control Knobs Notice: Please allow 1-3cm error due to manual measurement and make sure you do not mind before ordering. Please understand that colors may exist chromatic aberration as the different placement of pictures.