Circuit Breaker Lockout Rail, Pin-In, Standard, Circuit Breaker Voltage 120/277, For Use With Circuit Breaker Switches, Max. Number of Padlocks 1, Padlock Shackle Max. Dia. 9/32 in, Red, Height 2 7/16 in, Width 15/16 in, Length 2 7/16 in, Material Fiberglass Reinforced Nylon, Circuit Breaker Poles 1