These green male Gilbert replacement plugs are the perfect complement for commercial holiday lighting or architectural designs. The SPT-1 plug is capable of handling up to 10 amps and 125 volts, and it is UL listed for both outdoors and indoors use. The simple slide back cover allows prongs within the cap to make contact to the wire easily and safely in Christmas light stringers or existing lighting sets. You will never need to stretch the wiring to reach an outlet again. Just attach a plug where you need it.