4100Toggle GuardFeatures:Protects circuit breakers from being accidentally switched ON or OFFFits all A-Series single pole circuit breakersFits all panel switchesCan be used on any brand of circuit breaker panel using standard toggle type circuit breakersUses circuit breaker mounting screw holeIncludes 2 mounting screwsWARNING: 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.