2012 John Deere, 1990, air_drills, Width: 30, Spacing: 7.5", Extended wear seed boot , Smooth gauge wheel, Large Seed (White) Meter roller, Single row spacing , SeedStar CCS Monitor, less display, , 30' Spacing: 7.5" Extended wear seed boot Smooth gauge wheel Large Seed (White) Meter roller Single row spacing SeedStar CCS Monitor,