Buyers Products 50 Amp Rotary Switch Is Easy To Use And Controls Winding And Unwinding The Tarp On Your Dump Body Or Trailer. Its Momentary On-Off-On Function Is Controlled By A Lever-Type, Crow'S Foot Actuator That Comes With An Aluminum Name Plate Featuring Unwind-Wind Directions. The Switch Is Built Tough To Last Long. The Zinc-Plated Case Features Four Screw Terminals With Silver Laminated Contacts.