Extra heavy-duty specification grade toggle switch. Back and side wired or wire lead toggle switch. Industrial grade AC toggle switch for extra heavy-duty applications represent top-of-the-line quality and peak performance. Heavy gauge copper alloy brush arm for superior performance. Large silver alloy contacts for long life prevent sticking, welding and excessive pitting. Fully enclosed switch mechanism in rugged housing for strength, tracking and arc resistance. Self-grounding clip (self-grounding when used with a grounded metal wall box). Wire lead switches also available for fast and easy installation.