The DeWalt Heavy Duty Staple and Brad Tacker features easy squeeze technology for reduced actuation force and an AntiJam mechanism to prevent misfires. It is constructed from lightweight and durable aluminium. This tacker drives Heavy-Duty T50 (Type 140) Staples in 8mm, 10mm, and 12mm sizes, as well as 18 Gauge Brads in 12mm and 15mm sizes.