Double disc sealer blade assembly for FAST and John Deere 2510L liquid nitrogen fertilizer applicators with 20", 22" or Twin-Row spacing at 7-10 mph. Vertical fold models use on all rows. Rear fold models with knives use (17) on 23 row; use (21) on 25 row.
13.5" notched blades cover the slot to reduce nitrogen loss. For use with coulter mounted knives or StreamJet® tips.