Made of high-quality aluminum with a knurled for anti-slip grip, ensuring long-lasting use Features clear 0-10 numbering for accurate volume and tone control Designed with a 6.35mm (0.24in) inner diameter, compatible with most electric guitars and basses with standard potentiometer shafts. Comes with a hex key for secure attachment, easy to install. Made of high-quality aluminum with a knurled for anti-slip grip, ensuring long-lasting use. Comes with a hex key for secure attachment, easy to install. Color: Silver Material: Aluminum Alloy Package Contents: 3 x Knobs 1 x Wrench Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.