Adjustable Torque Screwdriver Adjustment range: 10-80 inch-lbs. (1.1 - 9.0 Nm) Heavy duty construction and custom assortment of 32 high quality hex bits (S2) Specifically recommended for gunsmithing; works for right and left hand threaded fasteners Produces loud "click" and prevents over-tightening when torque limit is exceeded Progressively favorable shipping rates for 2 or more items being shipped to the same U.S. address