Description: Fit for shaft hole diameter: 6mm/0.24 inch. Round knob. Made of premium metallic material, durable and long-lasting. Suitable for electric guitar and bass. The knob will fit more tightly on the rotating shaft. If your knobs are dirty, dingy, and old, or you just want a piece of guitar clothing, they'll work great. Specification:Color: Silver Material: Metal Size: Applique. 1.8x1.8x1.56cm(0.71x0.71x0.61in)Quantity: 1 set(2 pcs) Note: Transition: 1cm=10mm=0.39 inch No retail package. Please allow 1-3cm error due to manual measurement. Pls make sure you don't mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package Included: 1 Set (2 pcs) x Guitar Dome Knobs (Other accessories shown in the picture are not included.)