Chemical-impact resistant, color coded terminal screws|Compact, impact resistant nylon face and body are ultrasonically welded together for unrivaled strength|Face color coding by voltage facilitates locating and mating of proper devices|1-piece, high grade brass contacts offer excellent conductivity and heat rise resistance|Clearly marked NEMA configuration, rating and third party listing on each units face|Single-piece, solid brass mounting strap is free of easily loosened rivets found on other brands|Side and external screw pressure plate back wire capability|Clear, high-impact-resistant thermoplastic terminal chamber for clear view of connection|Exclusive, rugged integral cord-grip accepts a wide range of cord widths, no external parts to snag or break OFF|NEMA configurations always visible for fast without disconnecting|Industrial-strength, brass alloy plug blades and connector contacts resist heat rise, provide excellent conductivity|Comes disassembled and ready-to-wire for quick installation|Tri-drive assembly screws conveniently accept slotted, Phillips and Robertson screwdrivers|Double-wipe power contacts withstand work-site abuse and ensure lasting blade retention