With 60 years of proven dependability and more than 1.8 million units in service throughout the world, Dodge® Torque-Arm™ speed reducers are the standard of the industry and the benchmark to which others are compared. 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, 25:1 Gear Ratio, 50 HP, Solid Shaft Input, Twin Tapered Bushed Bore Output, 2-7/16 in Dia x 6-1/2 in L Input, 4-7/16 in Output, 1987 RPM Input Maximum Speed, Oil Lubrication, Shaft Mount, Cast Iron, Gray, 23.52 in L x 11.86 in W x 30.93 in H