Designed by safety directors specifically for OSHA lockout compliance - 1 3/4" tall. Durable, lightweight, non-conductive xenoy lock body. Customize on-site with permanent, write-on labels. Compliance with OSHA "One Employee, One Lock, One Key" directive. High security, reserved-for-safety cylinder with up to 100,000 key changes. Key retaining ensures that padlocks are not left unlocked. Eight colors available.