30 spline, for GM 14-Bolt, 5.438" Diameter, Four - 12mm Bolt Hole on 4.25" bolt circle. 2.550" flange depth. 2.68" register. Made from high strength heat treated 4140 steel and black oxide coated. Mates to Spicer® part number 3-2-1699.
Manufacturer: Mark Williams Enterprises, Inc.