DaduoRi 3-1/4" Dry Core Drill Bits with Pilot Bit & 3 Adapters (SDS Plus/SDS Max/1/2 Hex),Upgraded-Welded Core Bit for Concrete, Masonry, Brick, Stone, Mortar - 5/8"-11 Thread, 9.5" Depth (3.25")

DaduoRi 3-1/4" Dry Core Drill Bits with Pilot Bit & 3 Adapters (SDS Plus/SDS Max/1/2 Hex),Upgraded-Welded Core Bit for Concrete, Masonry, Brick, Stone, Mortar - 5/8"-11 Thread, 9.5" Depth (3.25")

$143.99 $232.99
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DaduoRi 3-1/4" Dry Core Drill Bits with Pilot Bit & 3 Adapters (SDS Plus/SDS Max/1/2 Hex),Upgraded-Welded Core Bit for Concrete, Masonry, Brick, Stone, Mortar - 5/8"-11 Thread, 9.5" Depth (3.25")
  • DaduoRi 3-1/4" Dry Core Drill Bits with Pilot Bit & 3 Adapters (SDS Plus/SDS Max/1/2 Hex),Upgraded-Welded Core Bit for Concrete, Masonry, Brick, Stone, Mortar - 5/8"-11 Thread, 9.5" Depth (3.25")
  • DaduoRi 3-1/4" Dry Core Drill Bits with Pilot Bit & 3 Adapters (SDS Plus/SDS Max/1/2 Hex),Upgraded-Welded Core Bit for Concrete, Masonry, Brick, Stone, Mortar - 5/8"-11 Thread, 9.5" Depth (3.25")
  • DaduoRi 3-1/4" Dry Core Drill Bits with Pilot Bit & 3 Adapters (SDS Plus/SDS Max/1/2 Hex),Upgraded-Welded Core Bit for Concrete, Masonry, Brick, Stone, Mortar - 5/8"-11 Thread, 9.5" Depth (3.25")
  • DaduoRi 3-1/4" Dry Core Drill Bits with Pilot Bit & 3 Adapters (SDS Plus/SDS Max/1/2 Hex),Upgraded-Welded Core Bit for Concrete, Masonry, Brick, Stone, Mortar - 5/8"-11 Thread, 9.5" Depth (3.25")
  • DaduoRi 3-1/4" Dry Core Drill Bits with Pilot Bit & 3 Adapters (SDS Plus/SDS Max/1/2 Hex),Upgraded-Welded Core Bit for Concrete, Masonry, Brick, Stone, Mortar - 5/8"-11 Thread, 9.5" Depth (3.25")
  • DaduoRi 3-1/4" Dry Core Drill Bits with Pilot Bit & 3 Adapters (SDS Plus/SDS Max/1/2 Hex),Upgraded-Welded Core Bit for Concrete, Masonry, Brick, Stone, Mortar - 5/8"-11 Thread, 9.5" Depth (3.25")
  • DaduoRi 3-1/4" Dry Core Drill Bits with Pilot Bit & 3 Adapters (SDS Plus/SDS Max/1/2 Hex),Upgraded-Welded Core Bit for Concrete, Masonry, Brick, Stone, Mortar - 5/8"-11 Thread, 9.5" Depth (3.25")
  • DaduoRi 3-1/4" Dry Core Drill Bits with Pilot Bit & 3 Adapters (SDS Plus/SDS Max/1/2 Hex),Upgraded-Welded Core Bit for Concrete, Masonry, Brick, Stone, Mortar - 5/8"-11 Thread, 9.5" Depth (3.25")
DaduoRi 3-1/4" Dry Core Drill Bits with Pilot Bit & 3 Adapters (SDS Plus/SDS Max/1/2 Hex),Upgraded-Welded Core Bit for Concrete, Masonry, Brick, Stone, Mortar - 5/8"-11 Thread, 9.5" Depth (3.25")

DaduoRi 3-1/4" Dry Core Drill Bits with Pilot Bit & 3 Adapters (SDS Plus/SDS Max/1/2 Hex),Upgraded-Welded Core Bit for Concrete, Masonry, Brick, Stone, Mortar - 5/8"-11 Thread, 9.5" Depth (3.25")

$143.99 $232.99
Ships in 1–2 business days · arrives in 3–7
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Key features

  • Complete Core Drill Set – Includes the dry core drill bit (OD:3.25 inch), 1 pilot bit, 1 drift key and 3 adapters (5/8"-11 male thread to SDS Max/Plus & 1/2" Hex) for compatibility. (For best results, use included adapters with guiding bit—compatibility with other brands may vary. See the user manual)
  • Precision Design & Instant Positioning - No need pre-drilling guide bit by DaduoRi designed, enabling seamless start-to-finish operation without mode switching.
  • Improved Cutting Diamond Segment – Features a newly cutting segment with higher durability, this 83mm core drill bit with pilot bit effectively drills through low to medium-reinforced concrete. (On 8" thick concrete with 12mm rebar— 8-10 holes per bit.)
  • Compatible Materials: This 3-1/4 in concrete core drill bit drills efficiently through brick, mortar, cinder block, and low to medium-reinforced concrete with rebar, making it suitable for HVAC, plumbing work
  • DaduoRi's coring bits alaways design to simplify drilling tasks for both professionals and DIYers

Free shipping included. 30-day hassle-free returns.

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