Arrow Attacker Multipurpose Staple Gun Tacker can be used for a variety of tasks, including cable, shelf lining, upholstery, and wire. It uses T-20 staples, 5/16" TV# 245118, 1/2" TV# 677916, and T-25 staples, 256-3/8" TV# 699785, 257-7/16" TV# 699793, and 259-9/16" TV# 699801. The stapler has a squeezable handle that makes it easy to use, and it can be used with 3 sizes of Arrow T25 Round Crown Staples and T20 Flat Crown Staples.