Uses 1330 u-joint (3-5/8" x 1-1/8"). End of pinion yoke to u-joint center ("B") is 3-1/2". 1.875” diameter for computer pick up assembly. Manufactured from high strength heat treated 4340 steel. All machining is done in relationship to the spline pitch diameter to ensure each yoke is symmetrical for balance and smooth operation. Weight 2.42#