Right angle gearbox with 1" keyed shafts. Cast iron housing is sealed to protect the gears and taper roller bearings. The body is drilled and tapped 4-1/4" square with 3/8" holes. Ships without oil (1/3 qt of 80-90 W) Gearbox is drilled and tapped with the same bolt pattern on both sides of the gearbox. This allows you to mount and arrange the shafts the way you need them. SHAFTS TURN IN THE SAME DIRECTIONS (CW/CW). Specifications: Dimensions: 5-7/8" X 6-1/4" X 4-1/8" Bolt Pattern: 4-1/4" Square with 3/8" Tapped Holes Input Shaft: 1" X 2-1/4" with 1/4" Keyway Output Shaft: 1" X 2-1/4" with 1/4" Keyway Input Power: 40 HP Input Speed: 1,800 Max RPM Shaft Rotation: CW to CW with 1:1 Ratio