The design of the Arrow T59 Staple Gun and the 5911 series of insulated fasteners allow safe and secure installation of all types of low voltage wire from 1/4 in. (6mm) to 5/16 in. (8mm). The 5911 series of fasteners, also available in stainless steel, has special coating that increases holding power by 3 times. This gun and fasteners are ideal for installing telephone wires, TV cable, computer cable, intercom cable and security systems. The insulators are available in black and clear. Uses: Installing Telephone Wires, TV Cable, Computer Cable, Intercom Cable and Security Systems.