The patented Multi Mark will help you get the perfect drywall cutout every time with no measuring. It can be used for practically all electrical boxes: metal, plastic, composite, rectangle, round, octagon, multi-gang, single-gang, standard, or thin. Just insert the target in the receptacle before hanging drywall. When you’re ready to cut the hole, hold the Multi Mark locator magnet over the area where you think the receptacle is located. When it finds the receptacle, the magnets will snap precisely into place where the receptacle is located. Trace around the locator, cut, then install. With the Multi Mark you simply put it up once, cut the hole and you’re done.