Clamp on breaker lockouts are versatile and easy to install using proprietary thumbscrew design no screwdrivers needed|Detachable cleat expands the range of applicable breakers|Equipping your employees with the proper lockout tools and warning devices can save lives, reduce lost employee time and cut insurance costs|Brady is a world leader in lockout/tagout products and services offering industry expertise and a broad range of durable, easy to use lockout devices|For use on breakers that do not have a hole in the switch tongue, including multi-pole breakers with tie bars|Turn thumbscrew to clamp lockout securely onto switch, then snap the cover closed to prevent thumbwheel from being loosened