1、This set has 3 control knobs, and you can can casual use it as volume control knob and tone control knob. 2、With these control knobs, the simple volume and tone adjustment will surely make your playing more attractive. 3、The installation is very easy to complete, because the knob can be screwed into the shaft with a little force. 4、Made of premium metal and ABS material, the durable control knobs are also a pretty decoration on guitar. 5、Has a compact size and a light weight, the control knobs are very easy to carry and store for daily use. 3 x Guitar Control Knob Item Type: Guitar Control KnobProduct Material: Metal + ABSProduct Quantity: 3 PiecesSingle Product Size: Approx. 1.8 x 1.8 x 1.8cm / 0.7 x 0.7 x 0.7in