4100 Toggle GuardFeatures: Protects circuit breakers from being accidentally switched ON or OFF Fits all A-Series single pole circuit breakers Fits all panel switches Can be used on any brand of circuit breaker panel using standard toggle type circuit breakers Uses circuit breaker mounting screw hole Includes 2 mounting screws WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.