Description Replaces OEM Parts Related Products 18" x 5mm thick, .197" Vortex coulter blade, Narrow cut with small pilot hole. Used to custom make bolt patterns. 17" X 5MM Vortex Coulter with Pilot Hole MSRP: Now: $58.19 Add to Cart The item has been added 15" X 4MM Vortex Blade with Pilot Hole MSRP: Now: $42.09 Add to Cart The item has been added 16" X 4MM Vortex Blade with Pilot Hole MSRP: Now: $53.29 Add to Cart The item has been added 18" X 5MM Vortex Coulter Blade Fits; 820-215C MSRP: Now: $62.19 Add to Cart The item has been added 18" X 7 Gauge Smooth Disc Blade, Pilot Hole MSRP: Now: $47.49 Add to Cart The item has been added Machine Make Model Air Seeder/Drill