Circuit Breaker Lockout Circuit Breaker Lockout Type Clamp-On For Circuit Breaker Type Multipole For Maximum Padlock Shackle Diameter 1/4 in For Voltage 120/277V AC Maximum Number of Padlocks 1 Overall Height 1.06 in Overall Length 2.25 in Overall Width 1.25 in Features Thumb Screw Tightening Mechanism For Use With Circuit Breaker Switches Lockout Color Red Lockout Material Polypropylene Mount Type Clamp-On with Screw