Arrow T59 Insulated Cable Staples are designed for secure fastening of low-voltage wires and communication cables, such as computer, CAT5/CAT6, RG6/RG9, COAX, and phone cables, without damaging the sensitive wire. These T59 staples are made of 18-gauge metal and plastic and feature a wide 5/16-inch crown and 1/4-inch leg length. The 300-pack comes in a clear boxed container, ideal for professional telecom installers.