Flat seeder blade - Fits John Deere Model 750, 1560, 1565, 1590 Grain Drills, 1690, 1850, 1860, 1890, 1895, 1990 Air Drills. Has 3.03 inch center hole, 4 .406 inch holes for 3/8 inch bolts on 4.4 inch centers, 5MM thick, single bevel. Replaces N214190/N283804.