The Master Lock 410YLW Zenex 410 Padlock features a 38mm wide plastic red body and a 38mm tall, 6mm diameter metal shackle. Designed exclusively for Lockout/Tagout applications, the durable, lightweight, non-conductive lock body is easy to carry and padlock features high security, reserved-for-safety cylinder with key retaining, to ensure padlock is not left unlocked.