Shop All Parts › P72358 - Flat Coulter blade, 16" diameter, 5 x 9mm bolt holes on P72358 - Flat Coulter blade, 16" diameter, 5 x 9mm bolt holes on $34.35 Flat Coulter blade, 16" diameter, 5 X 9mm bolt holes on 3-1/2" circle, 2-1/2" center hole, thickness 5mm Flat Coulter blade, 16" diameter, 5 X 9mm bolt holes on 3-1/2" circle, 2-1/2" center hole, thickness 5mm Add To Cart Added!