1Excellent Acrylic Material: This top hat guitar volume knob is made of excellent quality acrylic material which offers excellent endurance and durability. 2Easy To Install: This fine spline top hat guitar knob is easy to install , you just need to press the knob to fit tightly and ensure a firm fit. 3Embedded Modern Style: This guitar knob features an embedded modern style that fits 18 coarse spline (metric) split shaft pots and is compatible with most for Epiphone and import guitars. 4Good Compatibility: This splines top hat knob has a good compatibility and is very practical for potentiometers with knurled shafts with a diameter of 6mm. 5Wide Application: This top hat volume style rotary knob has a wide range of applications and can be used for practicing, performing and music recording. 4 xGuitar Volume Knob Caps