PowerFastâ"¢ Cable Tacker This single tool and 2 staple sizes (shown below) are all that is needed for stapling round or flat wire up to 5/32 IN or round cable up to 1/4 IN. For use in securing alarm/security wire, telephone, thermostat, speaker, intercom, and doorbell wire as well as cable TV, computer cable, and holiday lights. Chrome plated gun features lightweight, ergonomic design that requires 1/3 less effort to operate. Unique staple design has flat shoulders to eliminate overdriving that damages wiring. Gun includes sample pack of both staple sizes.Your are ordering Part # 31000