Features The product has been professionally tested, with efficient waterproof function and higher safety. With small size, easy to carry and store, convenient to use and with good performance. The key can be removed in the open or closed position, which is very convenient. High temperature resistant flame retardant base, can flame retardant in emergency. The metal shell has high strength and high gloss, which is beautiful and practical. Specification: Item Type: Key Switch Material: Stainless steel Uses: Car modification, computer modification, access control switches, CNC machine tools, industrial control instruments, etc. Working Voltage: 220VAC/DC (maximum) Working Current: 3A Gear Position: ON-OFF Installation Size: Approx. 12 x 21.5mm / 0.5 x 0.8inSize: Approx. 3mm / 0.1in16.5mm / 0.6in21.5mm / 0.8in10.5mm / 0.4in12mm / 0.5in  Package List:10 x Key Switches20 x Keys10 x Nuts Package List 10 x Key Switches 20 x Keys 10 x Nuts