Parts list: № Number Qty Name Options 1 AT417017 2 Chain Sprocket SUB FOR T252553 2 R78019 24 Washer 12 Per Sprocket 3 19H2402 24 Cap Screw 3/4" X 2-1/2", 12 Per Sprocket Next page: PICT-0132.1 0132 Drive Sprockets, Chains and Shoes ST698302 Track Chain, 40 Links with 495 mm (19.5 in) Shoes ST698307 Track Chain, 40 Links with 495 mm (19.5 in) Shoes, Maximum Life ST698303 Track Chain, 40 Links with 457 mm (18 in) Shoes ST698306 Track Chain, 40 Links with 460 mm (18 in) Shoes, Maximum Life ST848553 Track Chain, 40 Links with 711 mm (28 in) Shoes, Extended Life