Genuine Kailh GM 4.0 Mouse Switches, crafted to perfection and absolutely the best mouse switches available today. Comes in a pack of 4 (enough for two mice) to get you started in your mice modding adventures! Specifications: Current: 0.1A (maximum) \Voltage: 30V DC (maximum) Rating: 30V DC/0.1A Contact resistance: 100mΩ Insulation resistance: 100mΩ Withstand voltage: 500V AC (50 to 60Hz) Operating force: 65±15gf Releasing force: 25gf (Min) Operating position: 6.90±0.2(mm) Mechanical lifespan: 60,000,000 cycles (minimum)