• Best For: Contractors who need a 3-1/2" (83 mm) opening drilled dry in masonry, tile or stone; a different hole size means a different part number in the MK Premium dry line.
• Highlight: Dry-cut MK Premium core bit in the 3-1/2" (83 mm) size, so no water feed or slurry cleanup is needed.
• Expert Note: The catalog prints only the 3-1/2" (83 mm) diameter for part 158669, so check your drill's mounting thread against this bit before ordering.