Feature: 1. The guitar volume control knob is made of acrylic material, wear resistant, long‑lasting. 2. Adopting fine craftsmanship and exquisite workmanship, the knob surfacefeels so comfortable. 3. The letter on the knob is clearly printed and is not easy to fade. And you can adjust the volume or tone accoding the number on the knob. 4. More suitable for electric guitar and bass volume and tone knob replacement. 5. There are four specifications: Red with black letter, white with black letter, white with gold letter, tranparent with black letter, gold with black letter. Specification: Item Type: Tone control knob Material: Acrylic Diameter: Approx.17mm / 0.7in, 26mm / 1in Installation Size: Correspond to the potentiometer inner hole 6MM / 0.2in (that is, the corresponding potentiometer installation part diameter is 6MM / 0.2in) Inner Hole Width: Approx. 6mm / 0.2in Size: Approx. 26.5 x 17 x 12.5mm / 1 x0.7 x 0.5in Optional: Red with black letter, white with black letter, white with gold letter, tranparent with black letter, gold with black letter Package List: 4 x Tone Control Knob