VERSATILE CAPACITY: Designed to handle electrical wire cables up to 3/16 inch, including 12 awg Stranded wire. Interchanges with Arrow model T18 COMPATIBLE STAPLES: Works with multiple staple leg lengths - up to 7/16 inch for various installation needs. Jam less design and unique loading system makes Acme staple guns faster, safer, and more reliable than ever before WIRE COMPATIBILITY: Accommodates multiple wire types including Bell wire, CAT 3, Fire alarm cable, Security system cable, Stranded wire 12 awg, Telephone station and Thermostat wire ERGONOMIC DESIGN: Features a comfortable yellow grip handle and durable metal construction for efficient stapling operation PROFESSIONAL GRADE: Built for rapid and secure installation of staples over electrical wiring for reliable cable management. Limited lifetime warranty