Feature: 1. Made of high‑grade acrylic plastic materials, wear‑resistant and durable, can be used a long time 2. Using fine craftsmanship and exquisite design to bring smooth you to use 3. The high quality prints are clear and will not fade, easy you to read quickly 4. The product is a perfect tool guitar tone control knob and volume control knob 5. Provide multiple colors and styles you to choose, which is a delicate decoration your instruments Specification: Item Type: Acrylic bass knobs Material: Acrylic Optional Color: Black on transparent, black on gold, gold on black, white on red, black on red Appearance Size: Small diameter: approx. 25.2mm / 1in, large diameter: approx. 26.2mm / 1in Corresponding Potentiometer Installation Inner Hole Diameter: Approx. 6mm / 0.2in Package List: 4 x Acrylic Bass Knobs