These polyethylene staples with zinc plated nails are designed to offer fast and easy installation when securing most types of non metallic cables. The zinc plated nails not only resist rust and corrosion but drive together for fast installation with a hammer while the recessed heads ensure minimum exposure and avoid snags. The smooth polyethylene saddle protects wire and will not rust, rot or deteriorate. Use to attach all NM cable to joists, framing and other wood installations.