• Unique design for hydraulically driven rotary cutters
• Allows hydraulic motor to run at ideal 500 / 600 rpm range.
• Allows drive through standard agricultural gearbox. 1:1.47   OR   1:1.93 Ratio.
• Prevents transmission impact failures by instantly absorbing a massive
  5000 NM (3688 ft lbs) of torque.
• Integral freewheel eliminates transmission failure due to cutter disc inertia during hydraulic valve "STOP" condition.
• Standard 1 3/8" x 6 spline female / female.

Shown below:
A typical installation with Bare-Co agricultural gearbox and Bare-Co roller type hydraulic motor.