Welcome to WonderfulBuying.th! Type: Lock on Name of goods: speed regulating switch Color of goods: Black Materia L composition: silver point ABS nylon Product material: plastic Product use: electric tools hardware tools Voltage&Current: 6(6)A 220V Features: This switch is widely used in electric power tools for power controlling. Built-in speed control knob plastic casing trigger switch. Features Lock on type NO contact SPST type trigger button switch. Easy to assemble on the electric power tool and easy to operate by pushing the button. HAVE A GOOD SHOPPING TIME!