Uses 1350 series U joint. "B" = 3.720". Manufactured from high strength heat treated 4340 steel, giving over twice the tensile strength of OEM. Machining is done in relationship to the spline in the yoke to assure each yoke is symmetrical for balance and smooth operation. Used with p/n 39112 U-bolt / Cap Kit (sold separately). Designed to fit the 32-spline front and rear output shafts of New Process 203, 205, & Atlas transfer cases. This yoke is in-house produced with the required chamfer at the base to clear the bearing cage on Atlas transfer cases.