Parts list: № Number Qty Name Options 1 T232880 2 Chain Sprocket 23, Teeth 2 R78019 18 Washer 9 Per Sprocket 3 19H2857 18 Cap Screw 3/4" X 2", 9 Per Sprocket Next page: ST698945 Cast Sprocket ST74501 Track Chain, 37 Links with 406 mm (16 in) Shoes, Maximum Life ST74502 Track Chain, 37 Links with 457 mm (18 in) Shoes, Maximum Life ST74507 Track Chain, 37 Links with 610 mm (24 in) Shoes, Maximum Life ST873007 Track Chain, 40 Links with 406 mm (16 in) Shoes