Calculated Industries 8115 Multi Mark Drywall Cutout Locator Tool Perfect drywall cutouts for multiple sizes and shapes of electrical boxes with NO measuring using powerful rare-earth magnets Twice as fast finding and cutting openings for rectangular, plus round and octagonal boxes not possible with other marking devices Get professional results you can be proud of your first and every time with foolproof patented technology Pays for itself by avoiding costly measuring errors and keeping wasted drywall or paneling sheets out of landfills Two included Targets fit standard single or multi-gang, standard or thin plastic or metal boxes for any NEW construction installation Perfect drywall cutouts for multiple sizes and shapes of electrical boxes with NO measuring using powerful rare-earth magnets Twice as fast finding and cutting openings for rectangular, plus round and octagonal boxes not possible with other marking devices Get professional results you can be proud of your first and every time with foolproof patented technology Pays for itself by avoiding costly measuring errors and keeping wasted drywall or panelling sheets out of landfills Two included Targets fit standard single or multi-gang, standard or thin plastic or metal boxes for any NEW construction installation