The Gardner Bender 20/10 amp Toggle Switch features an O-ring and has screw terminals for quick and easy connections. The switch offers single pole, single throw (SPST) on off circuitry in a classic bat handle design for easy usage. This switch is compatible with standard 1/2 inch mounting holes. Recommended Uses: automotive, vending machines, emergency lighting, industrial equipment, motor control, food service equipmentBrass terminalsFrame and support are steel with zinc chromateCase is black phenolic plasticAll other external parts are brass/bright nickelOn-Off, single pole, single throw, heavy-duty toggle switch and screw terminal10 amp per 277 volt AC20 amp per 125 volt AC3/4 HP 125-250 volt AC