FEATURES AND BENEFITS:• 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.• One piece, high-grade brass contacts offer excellent conductivity and heat-rise resistance. • Clearly marked NEMA configuration, rating, and third-party listing on each unit's 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.• Accepts #14 - #10 AWG.