Description: Head Shape : Round,Switch Combanation: 1NO Mounting Hole Size: ?16mm, Switch Rating: 3A/250AC Momentary Type: Resetable [Push & Hold ON, Release OFF] High quality metal material & IP65 waterproof protection can be used in wet or dusty enviroment. , Enclosure material: Stainless Steel Great for electronmagnetic Starter, relay, Horn Button Switch, PC Power Switch or any circuit controls ,mechanical life for 500,000 cycles. Package Includes: 1 Piece Momentary Push Button Switch