TINE SHAFT, PONY I, II, III, & IV Tillers - 8 1/2 inches long 1 1/4 inches across. Includes tine shaft and key. Used on Pony models 20458, 20459, 20460, 20461, 20462, 20463, 20558, 20559, 20570, 20571, 20594, 20595, 20596, 20597, 5011, & 5111 Replaces Troy-Bilt Part #'s: 20437 20335