Circuit Breaker Lockout Clamp-On Circuit Breaker Voltage 480/600 For Use With Lightweight Padlock with Shackle up to 9/32 in dia. Max Number of Padlocks 1 Padlock Shackle Max Dia 9/32 In. Red Material Polypropylene and Impact Modified Nylon Includes Cleats Standards OSHA 1910.147