Stanley FatMax Heavy-Duty Hammer Tacker Heavy-duty hammer tacker. Driver mechanism delivers more than 500,000 cycles for long-life performance. Anti-jam mechanism reduces downtime and increases productivity. Bottom-load, high-capacity, quick-load magazine accepts up to two full sticks of staples to minimize reloading time. Chrome-plated steel construction frame for corrosion resistance and durability. Ergonomic comfort grip minimizes fatigue and maximizes comfort. Surface guard won't tear felt. Loads two full sticks Stanley TRA700 heavy-duty or Arrow T-50 heavy-duty 5/16 In., 3/8 In. and 1/2 In. staples. Type Heavy-Duty, Staple Sizes 5/16 In. to 1/2 In., Tool Length 11-1/4 In., Pkg Qty 1, Package Type Clamshell