FeaturesIndividual circuit breakers can be locked in the off position quickly and easily without any toolsCompact, universal design fits a wide range of large handle circuit breakersEasily attached with no modifications to panel or circuit breakerConstructed of rugged nylon and stainless-steel providing strength, durability, added security and corrosion resistanceAccommodates breaker handle dimensions up to 0.8 in thick and 3 in wideCan be installed by hand with no tool required