Features Better Control: This 2 position self locking knob switch will largely simplify the selection and control on your machine, thus improving the efficiency. Wider in Match: The selector switch allows for wide application on various power tools, vehicle, light, industrial equipment, industrial instrument, etc. 10Pcs in Total: There are 10pcs rotary selector switch in the set, and the large quantity will satisfy your needs for old and damaged parts replacement. Aluminum Alloy: Adopting premium aluminum alloy material, the 2 position rotary switch is not likely to break, durable to withstand the test of time. Easy to Install: Comes with a compact size and a light weight, the 22mm selector switch is very convenient to install within several minutes. Specification: Item Type: Knob SwitchMaterial: Aluminum Alloy Opening Size: Approx. 22mm / 0.87in Working Temperature: -25℃~+55℃ Mechanical Life: 2 Million Times Electrical Lifespan: 500,000 Times Wiring: M3.5 screw with square compression plate. Operation Type: Self Locking Rated Insulation Voltage: 440V Product Voltage: AC 240V Package List:10 x Knob Switch Package List 10 x Knob Switch