Hole saw is made of HSS high speed steel, impact resistance, wear resistance.15mm Hole Saw cut clean, round holes in iron, aluminum plate, alloy plate, plastic sheet.Hole drill bit is with special heat treatment, sharp edge, high strength.Perfect for Installing Locks, Knobs in Doors and Cabinets or Drilling Larger Diameter Holes Through Desks Etc.Suitable for hand-held electric drill, vertical electric drill and mobile belt magnetic drilling machine.
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