DeWALT, Baltimore, now offers a heavy-duty, 3/4-inch to 1 3/4-inch coil roofing nailer. The D51321's lightweight (4.9 pounds) magnesium frame and cap are designed to withstand the rigors of the professional jobsite. Steel wear guards provide added protection against abrasive work surfaces, while anti-skid pads minimize slipping in steep-slope environments. In addition, its four-bolt nose design and contact trip foot with carbide inserts provide longer life in harsh roofing conditions. Reliability is enhanced with the pneumatic-bias feed piston and compression spring feed pawl support. The combination of these two features allows the tool to cycle more consistently, with less jamming and skipping. The double O-ring feed piston design prevents premature wear and delivers a more consistent cycling tool.