For John Deere 1890, 1895, 1990, 1590, 1690, and 1860 models. Replaces John Deere Part# N282536 and bushings part# N283636. The main pin and bushings are those you want to keep within specification of a maximum of 1.5 of side to side slop of the cutting disc as well as cutting discs no less than 17 in order to avoid excessive wear on all other parts of the row unit. Sloppy main joints and low discs increase wear on seed boots, closing and firming joints and reduces furrow width.