5 Blade Crimper is a heavy-duty tool designed for crimping duct ends up to 1-5/8" throat depth. It produces long shallow crimps for a tight fit in sheet metal, making it ideal for use in HVAC applications. The crimper is made of heavy gauge steel with KUSH'NPOWER comfort grips for a secure and comfortable hold. The stamped steel blade has a straight cut and 22 gauge cutting capacity.