... have to chance to serve you. Thanks! Performance :1. Maximum circuit rating :35V DC 100mA,1W2. Contact resistance ... . Switch stroke:flat type : 0.1-0.5mm,tactile type :0.6-1.5mm8. Life expectancy:flat type : ... 5,000,000 closures or more ,tactile type :1,000,000 closures or more 9. Surface hardness :3H ... 4.5', 4.7", 4.8", 5.0",5.1", 5.2", 5.6", 5.7", 6.0", ... 0", 8.0", 8.9", 9.0",10.1",10.4",12.1",15"...