FLEXIBLE OPERATION: Wall Volume Control supports 5-speed adjustable, non-slip design, simple operation makes volume adjustment more flexible. LOSSLESS SOUND: Wall volume control knob delivers lossless sound quality and stable output to ensure sound quality is not affected. FLAME RETARDANT PC: 50W volume controller knob is made of PC material, flame retardant, safe and reliable, durable and long lasting. SIMPLE WIRING: Volume control rotary knob features simple wiring, convenient and easy for installation. ALUMINUM ALLOY FRAME: Volume controller knob includes an aluminum alloy frame, offering a sleek and look that blends well into home environments. Volume Controller Knob Tuning: Five Position Tuning Material: PC, Aluminum Alloy Color: Gold Size: Approx. 86 x 86mm Packaging content: 1 x Volume Controller Knob, 2 x Screws Please allow 0-2cm error due to manual measurement. Thanks for your understanding. Monitors are not calibrated the same, item color displayed in photos may be slightly different from the real object. Please take the real one as standard.