This Bostitch Industrial S5 Series Stapler (438S5-1) drives 16/17 gauge, 7/16" crown S5 staples with a length of 1/2" - 1-1/2".  It features an Anti-Jam breathable magazine to minimize downtime, as well as an aluminum extruded magazine for industrial strength.  The over-molded rubber grip maximizes comfort and minimizes fatigue, while the reduced height provides easy access for stapling in tight areas.