Steel; 2.488 in. Lg; 0.281 in. Diameter shaft 2.420 in. Lg; 0.250 in. Diameter groove 27.960 in. W; 0.470 in. Diameter head 0.320 in. W; 60 degrees openings each end; 3 slots located 2 one side; one on other side; slots are 0.500 in. O/a lg; 0.0125 in. O/a w