The Bostitch 651S5 air-powered construction stapler drives 16 gauge 7/16" crown staples from 1" to 2" in length. The 651S5 is a professional grade stapler at an excellent value. A lightweight and compact design make this unit very versatile. Features include an adjustable depth of drive, switchable trigger for sequential or bump fire operation, quick release nose for jam clearing, and vinyl siding attachment. The medium-crown stapler works well for lathing, sheathing and vinyl siding installation. Includes Bostitch 90-day warranty on wear items, one-year workmanship, and a three-year industrial warranty on tool housing and castings.