Description: Fittings: Fits NV4500 4x4 29 / 4x2 31 1994-2004, All NV4500HD models for or powered for RAM, 1/2" Drive. Function: These tools are used to remove or install the main shaft nut. Required for all vehicle repairs and benches which include main shaft servicing, including replacing the main shaft 5th gear. Main Shaft Nut: The gears have 4 slotted nuts on the output side of the main shaft to retain the main shaft. Due to the tall nuts they are tightened to, a suitable wrench to remove and install the main shaft nut. High quality: This wrench tools are made of high standard quality rust and impact resistant steel. High performance: stable and reliable, has long service time. Specification: Material: steel Size: 145MM/5, 71 inch Package includes: 1 piece main shaft nut wrench Note: 1. Please allow a little error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. I wish you a wonderful online shopping experience!