With the Phantom 61.105 HSS-Co 8% bi-metal hole saw, you cut clean, accurate 90 mm holes through demanding materials with complete confidence. The premium 8% cobalt alloy delivers superior heat resistance and extended tool life, even during heavy-duty cutting in steel, stainless steel, cast iron, aluminium, non-ferrous metals, wood, and plastics. Its variable pitch and positive rake angle minimize vibration while ensuring smooth operation and rapid chip removal. Offering a 34 mm cutting depth and an internal thread connection for your arbor, this tool makes creating precise penetrations for ventilation ducts, piping, and conduit simple and reliable.