Surebonder light tacker staples and plastic insulators fit the Surebonder light tacker #5540HOL. These are ideal for hanging holiday lights and garland outdoors or indoors. It's unique staple design will not damage wire or lights. Plastic insulators keeps wires from rubbing against the staples. Can also be used to tack down computer wires and cables. Pack includes 60 staples and 30 insulators. Each pack hangs approximately 100 ft of holiday lights or garland. For use in light tacker #5540HOL, will also work in Surebonder cable or wire tackers #5540 and #5545.