Item Type: Tone control knob_x000D_ Material: Acrylic_x000D_ Diameter: Approx.17mm / 0.7in, 26mm / 1in_x000D_ Installation Size: Correspond to the potentiometer inner hole 6MM / 0.2in (that is, the corresponding potentiometer installation part diameter is 6MM / 0.2in)_x000D_ Inner Hole Width: Approx. 6mm / 0.2in_x000D_ Size: Approx. 26.5 x 17 x 12.5mm / 1 x0.7 x 0.5in 1The guitar volume control knob is made of acrylic material, wear resistant, long?lasting. 2Adopting fine craftsmanship and exquisite workmanship, the knob surfacefeels so comfortable. 3The 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. 4More suitable for electric guitar and bass volume and tone knob replacement. 5There are four specifications: Red with black letter, white with black letter, white with gold letter, tranparent with black letter, gold with black letter.4 xToneControlKnob