Surebonder Light Tacker Staples and Plastic Insulators fit the Surebonder Light Tacker #5540HOL. These are ideal for hanging holiday lights and garland outdoors/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 300 staples and 150 insulators. Each pack hangs approximately 500 feet of holiday lights/garland. For use in Light Tacker #5540HOL, will also work in Surebonder Cable/Wire Tackers #5540 and #5545.