This lightweight steel spool by Mark Williams is designed to be used with Mark Williams style 35 spline axles and a stock case (2.893" or 3.062" O.D. bearings). Uses 7/16" bolts. Manufactured from through hardened 4140 high strength steel. 8.75 lbs.
Features:
- Cut for Mark Williams 35 spline axles
- 4140 Through hardened steel
- Uses 7/16" bolts
- Weighs 8.75 pounds
- Made in the USA
Note: We recommend replacing ring gear bolts every time a new gear is setup.
