16" x .197" thick fertilizer coulter blade. Used on Models 1770, 1770NT, 1790 with single disc fertilizer opener assemblies. Center hole 3-3/16". Made in USA. Serial No's up to 720100, Replaces JD# A72404
| Machine | Make | Model |
|---|---|---|
| Fertilizer Applicator,Planter,Air Seeder/Drill | John Deere | 1770,1770NT,1790 |