made of high strength plastic, durable heavy duty plastic construction with textured pedal top for maximum grip.Ergonomics allow accurate and reliable speed control with your feet. no more inconvenient controls for closing and opening your grinder and adjusting the speed with our telescopic shaft pedal.Foot switch improves safety, saves time in finding the switch, and prevents injury in an emergency. the constant speed and rotating speed can be adjusted by adjusting the foot pedal bottom screw.If the pedal speed is not significantly adjustable, we strongly recommend that you adjust the screw to make it loose on the outside. suitable for 1/4 inch HP crankshaft grinder rotating tool. Plug Type: US Plug, it applies to Canada, India, Japan, Mexico, Thailand, Taiwan, the United States, the Philippines and so on. Material:plastic colour:black Package Contents: 1 * Foot Pedal Only the above package content, other products are not included. Note: 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.