Malco TSMD Double-Cut TurboShear Drill Attachment Remove a narrow spiral scrap from the tool path to produce a clean, straight edge on both sides of the cut These blades can approach a cut from either end to produce a quality work-piece edge Blades can also navigate up to 90Degree outside profiles of metal roofing panels, or metal ductwork, and are beefy enough to cut through seams The long lasting carbon steel blades are also easily replaced on the job Made in the USA