BOSTITCH 438S2R-1 16 Gauge 3/4-Inch to 1-1/4-Inch Wide Crown Roofing Stapler N/A Made in USA 3/4- to 1-1/4-Inch 16-gauge nailer for composite shingle roofing, sheathing, and house wrap/vapor barrier Patented jam-free magazine; power control valve adjusts power by 30 percent Lightweight, durable aluminum frame; molded rubber comfort grip lasts life of tool Magazine capacity 160 staples 7-year warranty