Master Lock Company Government Safety Lockout Padlock, Zenex, 1 1/2", Red, 1 Key, 6/Box (470-410RED) Box of 6Designed specifically for OSHA lockout compliance, sturdy lock is brightly colored with a warning label. Steel shackle has 1 1 2" clearance. Durable, non conductive lock body is built to last. Permanent labels on lock guarantee that passersby will get the message. Complies with OSHA's "One Employee, One Lock, One Key" directive.