This for the 50's and 60's 16 spline GM output shafts such as 'Glides and T10's, Muncie 3 speeds etc. Specifications:  Spline 1.175" x 16, Ground Hub (Barrel to most of you) 1.500" x 4.500" C/L of U-joint to end is 6.160" and u-joint is 1310 series which is 3.25" span (lock Reference) x 1.062" cap.         

                                               ATTENTION!! PLEASE READ THE FOLLOWING!   

THESE DO NOT FIT EARLY PONTIAC, OLDS ETC HYDRAMATIC, PAY ATTENTION, NO OLDS OR PONTIAC OR BUICK BIG SHAFT. IF YOU DO NOT KNOW FOR SURE THAT THIS FITS YOUR CAR OR TRUCK, CALL TOLL FREE 1-877-614-4327