This is A NEW Quill Gear for the Torque Amplifier for IH tractors 1566,1568,1586,3788, 6788. This comes with new inner needle bearings. I also have all the other parts you may need to complete a TA job. I also expect to receive Email correspondence to help with proper installation.Check out my store for other IH parts. I have over 25 yrs. experience of rebuilding IH tractors and motors and have many parts available . Email your questions and I can probably help you.