Alpinetech 16mm 5/8" Anti-Vandal Momentary Stainless Steel Metal Push Button Switch Flush Mount Flat Top Normally Open 1NO Shallow Depth Momentary Type - Push & Hold ON, Release OFF Short depth High IP67 Protection for used in wet or dusty enviroment. Stainless Steel material for resistant to wear and abrasion. Great for electronmagnetic Starter, relay, Horn Button Switch, PC Power Switch or DIY Projects