• Weatherproof lightweight aluminum design • Red epoxy key is detachable but only when in OFF position • 3 stud design allows a battery, electrical system, and alternator to all be connected or disconnected so no back feeding of the electrical system occurs • All studs on this switch are designed for heavy duty 3/8" ring terminals, and no additional jumper wires are necessary • 3-Post • 300 max amps • Available with black panel ONLY that measures 2-1/2" x 2-1/2"