Features 1High thickness silver contact, long service life, good conductive properties, safety and high efficiency. 2Plastic material manufacturing, lightweight, impact resistance and oxidation resistance for longer service time. 3Modular structure, disassembly convenient, contact can replace at any time, mechanical stability. 4Iron base material and silver contact material, durable and reliable in use. 5Selflocking operation structure, 22mm / 0.9in of the mounting hole diameter. Specification Condition: 100% New Item Type: Key Lock Switch Material: Plastic Contact Current: Below 10A Installation Hole Diameter: Approx. 22mm / 0.9in Operation Structure: Self-locking Contact Form: on and off Base Material: iron Contact Material: Silver Package List 1 x Key Lock Switch 2 x Key