1710 FULL ROUND SERIES YOKE.. **** IF USING FOR A THRU SHAFT YOKE ON AN SQHD YOU MUST SLIGHTLY SHIM TO STOP FROM BOTTOMING OUT THE FACTORY YOKE IS SLIGHTLY LONGER BUT THAT IS NOT OFFERED ANY MORE INTERCHANGE SHOWS THEY WORK THEY WILL NOT WITH OUT THE SHIM OR SPACER**** Spline Size: 1.750" - 10 Major Diameter: 1.750" Ground Hub Diameter: 2.750" Length Thru Hole: 2.250" Centerline To End: 4.875" C'Bore Depth: 0.060"