This rotary knob is made of plastic material, 6mm metal hole, built-in screw makes it can be adjustable.<br> <br> Potentiometer Rotary knob is useful for connecting rotary potentiometer, usually multi-turn linear potentiometer which still serves as a volume control switch.<br> <br> Groove handle design, more convenient switch. Plastic control knob to be assembled with a potentiometer for easier rotation.<br> <br> One type potentiometer volume switch, clockwise and counterclockwise rotary control.<br> The spare part for the audio device, the 6mm shaft can be pushed easily on the 180 degree rotary knob to easily control the potentiometer.<br> <br> <br> Specifications:<br> <br> Material: plastic, metal<br> <br> Color: black<br> <br> Suitable for shaft hole diameter: 6mm / 2.3inch<br> Button top diameter: 27mm / 10.6in<br> <br> Height size: 16mm / 6.3in<br> <br> Rotation angle: 180 degrees<br> <br> Note:<br> <br> Light shooting and different displays may cause the color of the item in the picture a little different from the real thing.The measurement allowed error is +/- 1-3cm.<br> <br> Package includes:<br> <br> 4 * Potentiometer Knob<br> <br> Potentiometer Switch Knob<br> <br> Easy to install, push-on design and with single side screw to fix, not easy to fall off.<br> <br> Volume control rotary knob<br> <br> Perfectly suitable for bass guitars with equipment electronic audio with 6 mm control shaft (round or toothed).<br> <br> Tone control knob for electric guitar or bass<br> <br> Suitable for installation on electronic equipment, or on electric guitars and basses, used to control the volume and tone of musical instruments.<br> <br> Strong and durable knob<br> <br> Made of high quality bakelite, solid and durable, aluminum design gear shape, not easy to slip and perfectly match your kitchen.<br> <br> Bakelite potentiometer switch knobs<br> <br> Visible indicator, easier to identify, easier to fine-tune mechanical equipment.