OTC's 1,000 lb-ft Torque Multiplier Wrench is used to tighten or remove nuts and bolts over and above the rated force a standard wrench can produce Perfect for differentials, suspension fasteners, lug nuts, frozen nut or bolt applications, and more - ideal for situations regular wrenches just can't handle Can also be used to accurately torque fasteners over 3 times the highest output of a torque wrench i.e. using a 250 lb-ft torque wrench to torque a fastener to 825 lb-ft Input: 1/2 inch drive, 365 lb-ft maximum; Output: 3/4 inch drive, 1,100 lb-ft maximum; 2.9 inch head width; 3.3:1 upscale conversion ratio; 13-3/4 inch long reaction bar; frictional gear loss = 6% Sturdy blow-molded hard case keeps tools protected and secure when not in use