Single Pole Breaker Lockout Circuit Breaker Lockout Type Clamp-On For Circuit Breaker Type Single Pole For Maximum Padlock Shackle Diameter 9/32 in For Voltage 120/277V AC Maximum Number of Padlocks 1 Overall Height 1.25 in Overall Length 3.5 in Overall Width 1.25 in Features Adjust to Breaker with Simple Thumb Turn Grip Tight Design Effectively Locks Out Circuit Breakers For Circuit Breaker Manufacturer Grip Tight