Torque Multiplier, Max. Rated Input 173 ft-lb, Max. Rated Output 3,200 ft-lb/ OVERALL LENGTH: 20.000 INCHES NOMINAL OVERALL HEIGHT: 6.375 INCHES NOMINAL TORQUE CAPACITY: 3200.0 FOOT-POUNDS MAXIMUM DRIVE SURFACE SIZE: 0.500 INCHES NOMINAL FIRST END DRIVE SURFACE SIZE: 1.000 INCHES NOMINAL SECOND END DRIVE END SHAPE: SQUARE FIRST END INTERNAL DRIVE END SHAPE: SQUARE SECOND END EXTERNAL GEAR RATIO: 20.25 TO 1 SPECIAL FEATURES: TWO STAGE PLANETARY GEAR SYSTEM; TUBULAR REACTION BAR; SELF-CONTAINED, 3 POSITION ANTI-BACKLASH DEVICE MATERIAL: STEEL OVERALL SURFACE TREATMENT: CHROMIUM OVERALL STYLE DESIGNATOR: 139 GEARED