Hydraulic pump shaft. 3/4 inch diameter, 9-3/8 inch overall length. End A type: key, 3/4 inch size (use WK-9, 3/16 inch x 3/4 inch for replacement key). End B type: 10 inch spline, 1 inch size. Associated components end A flex cplr: L601-14 (3/4 inch bore drive flanges both sides), end B hub: 290 inch.