Description JD Idler Sprocket 40-14 Tooth 1/2" ID Repl AA32729 Qty: (1 pc) Fits 1700, 7000 Series Planters, 1520, 1530, 1535, 1560, 1565, 1590 Drills. #40 chain 14 tooth with .50" bore. Will Replace AA32729. This item is a suitable alternative for the following: 514-JD32729, 864-32729, G32729, SH42729, 32729, AA32729