Description Features: Make of metal body materials, dome top shape, wear resistant, enduring and not easy to damage. Easy to install and tighten, with smooth, positive rotate. Perfect for electric guitar, it is replacement for your damage, dirty or old control Knobs. Perfect for guitar player who want to customize their sound and enhances their playing experience. The guitar control Knobs is perfect for most basses and guitar and controls the Volumes. Specifications: Materials: Metal Size: As shown in the picture Note: Please allow 1-2cm errors due to manual measurement, make sure that you not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 4pcs/Set Guitar Knobs