The Torque-Arm® II is a shaft mount helical gear reducer that mounts directly to the driven shaft with a number of accessories available to produce versatility, cost savings and long life. A long list of standard features makes this reducer suitable for a wide range of environments right off the shelf. Dodge® Torque-Arm® II Speed Reducer, Heavy-Duty Single and Double Reduction, Series: TA Series, 9:1 Gear Ratio, 100 HP, Solid Shaft Input, Taper Bushing Output, 2-7/16 in Input, 4-7/16 in Output, 200 RPM Output Maximum, 1943 RPM Input Maximum, 85 % Efficiency, Shaft Mounting, Cast Iron, Gray Painted, 23.52 in L x 11.86 in W x 30.93 in H Dimensions