This switch is widely used in electric hand drills or other power tools. The speed is convenient to adjust, press the switch button to start, the lower you press, the speed is faster Easy to mount on the electric hand drill and convenient to use. In low light, so it has the lighting function. Specifications: Material: plastic and metal Color: black Maximum current: 16 A Voltage: 7. 2 V - 24 V Size: 6.5 x 4 x 1.2 cm/2.56 x 1.57 x 0.47 inch Package includes: 1 x Switch cordless drill speed control trigger