Alpinetech 19mm 3/4" Waterproof Momentary Stainless Steel Metal Push Button Switch Screw Terminal Extended Button Normally Open 1NO Momentary Type - Push & Hold ON, Release OFF Easy installation with screw terminals Highest IP68 waterproof protection for used in wet/marine enviroment. Stainless Steel material for resistant to wear and abrasion. Great for electronmagnetic Starter, relay, Horn Button Switch, PC Power Switch or any circuit controls.