Malco TSFC Turbo Shear Fiber Cement Cutting Shear Attachment Accessory for turning almost any 14.4-volt or higher power drill into a cement shear Wide skid plate design stabilizes for precise, clean cuts in fiber cement siding and backerboard up to 1/2-inch thick Heat-treated high carbon steel blade and reversible skid plate Blade and skid plate are replaceable Weighs 3 pounds when shipped