1Made of high‑grade acrylic plastic materials, wear‑resistant and durable, can be used for a long time 2Using fine craftsmanship and exquisite design to bring smooth surface for you to use 3The high quality prints are clear and will not fade, easy for you to read quickly 4The product is a perfect tool for guitar tone control knob and volume control knob 5Provide multiple colors and styles for you to choose, which is a delicate decoration for your instruments4 x Acrylic Bass KnobsItem Type: Acrylic bass knobsMaterial: AcrylicOptional Color: Black on transparent, black on gold, gold on black, white on red, black on redAppearance Size: Small diameter: approx. 25.2mm / 1in, large diameter: approx. 26.2mm / 1inCorresponding Potentiometer Installation Inner Hole Diameter: Approx. 6mm / 0.2in