Pass & Seymour Turnlok ; 2-Pole 3-Wire Locking plug in black/white color is made of nylon 6/6 to offer superior impact and corrosion resistance. It has brass blade connector contacts to offer high conductivity. Plug offers external cord grips for secure and proper cord retention. It has double dovetail design to offer superior protection against the cord pullout forces. It has raised ribs to offer an additional grip for turning lock/unlock.Plug has rounded back contour to reduce snags and inhibition. Scallop shell design to offer non-slip gripping surface during plug insertion and withdrawal. It has a voltage rating of 250 VAC and a current rating of 20 Amps. Plug has quick-thread assembly screw and cord-grip screw to offer easy installation. It has cord size of 0.385 - 1.15 Inch. Plug measures 2.200 Inch top diameter x 3.750 Inch. It is suitable for industrial applications.Plug has an integral flexible rubber cord that seals around "SO" cord to offer protection from oils/water and chips entering to the wiring chamber. Plug accommodates wire of size 4 AWG. It operates at a temperature of -40 to 75 deg C. Plug is UL listed/NEMA rating/CSA certified. Also known as -P & S L620-P Turnlok Plug, 3-Wire, 20A 250V, L6-20P, Black Back/White Front-Pass & Seymour L620-P Turnlok Polarized Grounding Specification Grade Lockin