Our Male and Female plugs fit easily on 18 gauge wire without the need for tools! Quick Connect plugs feature a slide on back and are sometimes called Vampire plugs because of how the teeth inside the plug bite the wire. We offer these in Green, White, or Black depending of if you need SPT-1 or SPT-2 rated plugs. To use our Quick Connect plugs simple separate the two strand of 18 gauge wire, insert them into the plug fully using the divider wall inside to insure the wire wont short out, lay the wire down onto the teeth on the top of the plug, slide on the back and you're done, simple! These are great for making custom extension cords/power strips and are great for fixing Christmas displays and the like!