Leviton armored vinyl connector is 250 amp 250 volt 2-pole 3-wire. Ideal for shops, garages, and rough duty work with hard floors. Dirt and moisture resistant. Features two piece strain relief cord grip clamp that centers cord for neat installation. Use with 18-3, 16-3, 14-3 and 12-3 AWG cord sizes (.245 to .655 inches. Armored feature takes a lot of rough punishment. Triple drive head screws; 3/16 inch fits slotted, philips, and roberson screwdrivers. Husk and module are keyed for easy alignment during wiring. NEMA rating molded into front module for easy identification.