Ideal for cutting over ridges of metal roofing. Heavy-duty jaws and gearing are suitable for cutting 18 gauge galvanized steel and most other sheet metals. Larger, wider-opening jaws also cut through layered metal seams including the ribs of 20-gauge spiral duct. The Turbo Shear HD also makes angled crosscuts through profiles of metal building panels and stone coated metal shingles. Reposition the Turbo Shear HD upside down as necessary for greater maneuverability.