Made of high-quality plastic and metal material, environmental-friendly, safe, sturdy and durable. Composite button Surface waterproof and dustproof, Stop button prior to Start button,Concise design for motor start stop control.Slim and rectangle design can be installed conveniently on your machine or your operating panel. Inside contact points are copper alloy, keep perfect electrical .performance,very durable and long life time.The buttons are easy to operate, simple to use, a start button, and an end button. ON/OFF Water Proof Push Button Switch fit for KAO-5 / BSP210F-1B.ON pushbutton are self-locking, OFF pushbutton are automatic reset. Working Voltage:AC 220/380V Working Current:10A Size(L*W*H):Approx.3.35'X2.17'X1.77'/85X55X45mm Material:Plastic Package Includes:1 x Drill Button