Aftermarket plastic chain idler. New Holland Grinder mixer models 353, 355, 359, 359, Hay mower conditioner models 499, 1469, 1499, Square baler models 565, 570, 575, 580, BC5050, BC5060, BC5070, BC5080, Bale kicker model 70, Round baler models 848, 853, 630, 640, 650, 660, 634, 644, 654, 664, 638, 638, 648, 658. Part number 678571