Master Lock® Model 411GRN Thermoplastic Safety Padlock. 1-1/2in (38mm) wide 3in (76mm) tall Thermoplastic blue body, shackle with 1-1/2in (38mm) clearance. Designed exclusively for lockout tagout applications. Durable, lightweight, non-conductive Thermoplastic lock body. Customize on-site with permanent, write-on labels. Compliance with “One Employee, One Lock, One Key” directive directive. High security, reserved for safety cylinder.