Extreme Max Uniplow Replacement 50" Cutter Blade. Always replace worn or uneven cutter blades for effective plowing. The cutter blade is the detachable blade bolted to the bottom of the plow. It takes most of the "wear and tear" during plowing and it's designed to be removed and replaced for maintenance. This replacement cutter blade is designed exclusively for UniPlow One-Box ATV Plow. Features of Extreme Max 5500.5016 Uniplow Replacement 50" Cutter Blade Replace worn or uneven cutter blades on UniPlows for effective plowing Takes most of the "wear and tear" during plowing Replacement cutter blade is designed exclusively for UniPlow One-Box ATV Plow (Extreme Max 5500.5010) Package Contents: Extreme Max 5500.5016 Uniplow Replacement 50" Cutter Blade Extreme Max 5500.5016: Uniplow Replacement 50" Cutter Blade