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 2 in Overall Length 1.5 in Overall Width 1 in Features Thumbscrew For Use With Breakers 9/16 in W X 3/8 in L Includes Detachable Cleat Lockout Color Red Lockout Material Nylon/Polypropylene Mount Type Clamp-On