ID: 2 3/4" (70mm) with 17 teeth, OD: 5" (127mm).Fits Case/International models 1030, 1070, 1090, 1170, 1175, 1270, 1370, 2470, 2670, 300B, 430, 470, 530, 830, 870, 930, 970Replaces A57170 A65425 A66365