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.