Surebonder No. 19 5/16-inch by 5/16-inch black insulated cable staples are genuine Surebonder fasteners, designed for use with the Surebonder 5659 TRIGGERFIRE wire and cable tacker. Each box has 300 pieces and is ideal for installing Coax RG59 Quad or RG6 wire. Is also perfect for Ethernet cable, telephone wires, TV cable, computer cable, intercom cable, and security systems. Electrogalvanized finish for added corrosion resistance.