Tamper-Resistant Heavy-Duty Decorator Hospital Grade Duplex Receptacle Back & Side Wire 20amp 125volt, Red.FEATURES:- Dual mechanical shutter system to help prevent insertion of foreign objects.-Auto-ground clip assures positive ground.-Easily accessed break-off line-contact connecting tab for fast and easy split-circuit wiring.-Backed-out tri-drive brass terminal screws for faster installation.-Internal screw-pressure-plate back and side wire capability.-Two back wire holes for additional wiring flexibility.-Corrosion-resistant plated steel strap is locked in to face and back body to resist pulling away from the face/body assembly.-.032 inch thick brass triple-wipe power contacts.-Two drive screws anchor steel strap to back body and face where abrupt removal torque is greatest.