Robust construction gives accurate results to ±4% even in arduous working conditions. Range 150-600 ft/lbs (200-800nM) Can be used on Left or Right Hand threads Interchangeable insert for 1" or 3/4" Drive Sockets The break-a-way action gives an unmistakable signal in the handle which can be seen and felt. The break angle improves accuracy by reducing the possibility of over-torquing. Dual scale, NM and FT. LB. Carrying case included.