Yakamoz 19mm 3/4" Metal Momentary Push Button Switch 3A/250V AC SPST 1NO Industrial Car Switch - Black Shell Great for electronmagnetic Starter, relay, Horn Button Switch, PC Power Switch or any circuit controls on over 500,000 cycles. Mounting Hole Size: 19mm, Switch Rating: 3A/250AC, Switch Combanation: 1NO Momentary Type: Resetable [Push & Hold ON, Release OFF] Perfect for your small DIY MODs, esy tp install, screw clamp type terminals to make fitting very easy. High quality metal material & IP65 waterproof protection can be used in wet or dusty enviroment.