Acme 37AC Staple Gun. Bottom load for max size:11/32". Alternative to -T-59(5/16") Acme 37A is made for 12-32 pair Category 3 wires, and 18/7 flat thermostat wires. The 37AC staple gun is designed to be used for RG6QUAD/59 cables; both can be used with coaxial and other large cables. Galvanized steel and corrosion-resistant Monel staples are available for both stapling gun models. Each Acme stapler is designed for faster installations that require less time and work.