Features: brand new and high quality Durable Material: The control knobs are made of plastic, which is sturdy and durable, ensures a long for time use. Smooth Surface: Delicate workmanship with good texture, and providing smooth surface for you to use. Easy to Use: It fits for 15mm diameter pots, easy for you to use & install. Use for guitar volume/tone control. Nice Accessory: Especially designed for guitar, suitable for guitar lovers. It is used to replace the dirty and old knobs. Package Includes: 3Pcs control knobs & a inner hexagon spanner. Great replacements for dressing up your guitar parts. Specifications: Material: Plastic Color: White/Yellow/Red/Gray Package Weight: approx.12g Knob Size: approx.18x18mm/0.70x0.70in Wrench Diameter: approx.1.5mm/0.05in Package Includes: 3Pcs x Guitar Knobs 1Pc x Inner Hexagon Spanner note: Please allow 1-3mm error due to manual measurement. Please make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!