PTO Shaft to New Holland Round Balers Our PTO Shaft Adaptable Models New Holland Round Balers Models: BR7050, BR7060, BR7070, BR7080, BR7090 New Holland calls for CAT3, CAT4, and CAT5 constant-velocity drivelines, based on the model and different torque limiters. For input shafts, we recommend 1.375-6 and 1.375-21. We can help you with your requirements. Available for tractors that use 1.375-6 or 1.375-21 Input shaft 1.375-6 or 1.375-21 Other combinations are also available.