Used to multiply applied force for setting and removing high torque fasteners. Planetary gear system multiplies input force many times. Torque multipliers lower physical effort, resulting in smooth, steady application of torque and increased accuracy. Permits application of high torque without use of a long lever. Can be driven with a torque wrench. Kit includes straight and 90° reaction bars with reaction base. 90° bar and base rests against truck wheel rims when used to torque lug nuts. Higher ratios require lower input forces, reducing operator effort. Includes breakaway input adaptor to protect wrench from overload, 1/2 inch input drive, 3/4 inch output drive. 9:1 gear ratio, 6.5:1 torque ratio, 170 ft/lb maximum input. 1100 ft/lb maximum output. 3/4 inch input drive, 1 inch output drive. 4:1 gear ratio, 3.3:1 torque ratio, 560 ft/lb maximum input, 1850 ft/lb maximum output.