Product Overview Billet Chrome-Moly Steel 1350 Pinion Yokes YF9135028B - 28 Spline - 1-3/16" x 3-5/8" U-Joint YF9135035B - 35 Spline - 1-3/16" x 3-5/8" U-Joint Machined from a Blank of 4140 Chrome-Moly Black Oxide Finish