"Security system for locking the 277 Inchno hole circuit breaker switch . This device is installed directly on the circuit breaker switch and is locked using a padlock. Locking clamp (65404) available separately for securely locking either a 277 V or 480\/600 V circuit breaker. Clamps are provided in batches of 6.Type = Circuit Breaker LockoutMaterial = PPAttachment Point Maximum Size = 38mmLock Shackle Maximum Diameter = 7mm"