> Diamond Core Drill Bits for Concrete, Masonry & Stone | Distar USA

🚚 Free UPS Shipping Over $150 | Professional Tile & Stone Tools
Compare (0/5)

1 product

A white segmented diamond drill bit with the brand name Distar written on it.

Core Drills

Diamond Core Drill Bit for Porcelain & Granite (300+ Holes)

From $77.91
From $77.91

Diamond Core Drill Bits for Concrete & Stone

Diamond core drill bits engineered for drilling clean, precise holes through concrete, masonry, stone, tile, and other hard construction materials. Unlike standard drill bits, core drills remove a cylindrical plug of material — delivering faster, more efficient hole creation with minimal damage to surrounding surfaces and no cracking or spalling at the edge.

Core Drill Bit Types

  • Wet Core Bits — Water-cooled for deep drilling, reinforced concrete, and high-volume production work. Longer blade life, cleaner holes, and significantly reduced silica dust. The professional standard for structural drilling.
  • Dry Core Bits — No water required — ideal for quick, shallow holes in block, brick, and unreinforced concrete where speed and portability matter more than depth.
  • Rebar-Rated Core Bits — Reinforced segment design for drilling through concrete with embedded steel rebar without stalling or damaging the bit.
  • Tile & Stone Core Bits — Precision-ground for clean, chip-free holes in porcelain tile, ceramic, granite, and marble. Used for fixture cutouts, drain holes, and plumbing penetrations.

Common Applications

  • Plumbing line and pipe penetrations through concrete walls and slabs
  • Electrical conduit and cable routing through masonry
  • HVAC duct and sleeve installations
  • Anchor bolt and rebar dowel holes in structural concrete
  • Sink, drain, and fixture cutouts in tile and stone countertops

How to Choose the Right Core Drill Bit

Use our Diamond Blade Selection Guide for general material matching, or follow these guidelines for core drilling:

  • Material hardness: Hard materials like granite and reinforced concrete require a softer bond segment — it wears faster to expose fresh diamond. Softer materials like brick and block need a harder bond.
  • Hole diameter: Match the bit diameter to your fixture or conduit spec. Core bits are available from small tile cutouts up to large structural penetrations.
  • Drilling depth: For deep holes, wet drilling is essential — dry bits overheat quickly beyond shallow depths.
  • Tool compatibility: Core bits require a drill with a core drilling chuck or SDS adapter. Check the bit’s shank type (1-1/4"-7 UNC, SDS-Plus, SDS-Max) before ordering.

Distar core drill bits are built for professional contractors who need reliable performance, long service life, and precise results across demanding jobsite conditions. Pair with diamond blades for cutting and dust collection shrouds for dry drilling dust control.

Frequently Asked Questions

Can diamond core bits drill through rebar?

Yes — rebar-rated core bits are specifically designed to cut through embedded steel reinforcement without stalling or damaging the segment. Standard core bits can be damaged by unexpected rebar contact, so always use a rebar-rated bit when drilling into reinforced concrete.

Do I need water when using a core drill bit?

For wet core bits, yes — continuous water flow is required to cool the bit, extend its life, and suppress silica dust. Dry core bits don’t require water but should only be used for shallow holes with regular breaks to prevent overheating. Never use a wet-rated bit dry.

What shank type do I need for my drill?

Core bits come in several shank types: 1-1/4"-7 UNC (standard for core drilling rigs), SDS-Plus (for rotary hammer drills up to ~65mm), and SDS-Max (for larger rotary hammers). Check your drill’s chuck specification before ordering — adapters are available for some combinations.

Can I use a core bit to cut holes in porcelain tile?

Yes — tile and stone core bits are designed specifically for drilling clean, chip-free holes in porcelain, ceramic, granite, and marble. Use a low speed with water or a wet sponge to keep the bit cool, and avoid applying heavy downward pressure to prevent cracking the tile.