A-AA58321 Disc Blade, ClosingOne New Aftermarket Replacement Closing Disc Blade Assembly Fits John Deere Planters This 8 inch closing disc blade assembly is a direct replacement for the disk closing attachment used on Fits John Deere MaxEmerge 2 and related row crop planters. Mounted at the rear of each planter row unit, the closing disc presses soil back over the seed furrow to ensure consistent seed to soil contact and emergence. The assembly includes the disc blade, bearing,