Leviton 620CA Armored Connector, 20-Amp, 250-Volt, 2-Pole, 3-Wire, Grounded Ideal for shops, garages, and rough duty work areas Triple drive head screws for fast installation Cord grip adjust: #18-3, #16-3, #14-3 & #12-3 cords two piece strain relief clamp centers cord for neat installation Underwriter Laboratories listed, Canadian Standards Association certified, Official Mexican Standard