DaduoRi 4" Concrete Core Drill Bit with SDS Max Adapter (1-1/4"-7 Thread) - 14" Cutting Depth & Upgraded Welded Teeth Core Bits for Concrete with Rebar, Brick, Masonry,Stucco,Mortar,Wet Coring — Open-Box, 7% Off

Complete Core Drill Bit Kit – Includes 1× 4" core bit (1-1/4"-7 UNC thread) + 1× standard UNC core drill adapter (SDS Max shank). Good solution for DIYers needing core drilling without professional core rig

Convert Your SDS Max Drill Instantly – Our core drill bit adapter quickly connects standard SDS Max rotary hammers to core bits. During drilling ,recommend manual water cooling (or updated to our water injection adapter)

Upgraded Laser-Welded Segments - The 4 inch core drill bits reinforced construction minimizes tooth breakage (ROTATION mode only). Segment height: 10mm

Compatible Materials: Suitable for coring a wide range of surfaces including reinforced concrete with rebar(medium-light), brick wall, block, stucco,mortar,aslphat and stone

Innovative designs from DaduoRi - Our concrete coring bits alaways design to simplify drilling tasks for both professionals and DIYers. Just come!

Turn your SDS Max rotary hammer into a capable core drilling tool with DaduoRi’s Complete Core Drill Bit Kit. This set includes a 4-inch core bit (1-1/4"-7 UNC thread) and a standard UNC core drill adapter (SDS Max shank), providing an easy and effective way to drill clean holes without a professional rig. Key Features: Quickly converts your SDS Max hammer drill for core drilling Works on concrete (with medium-light rebar), brick, block, stone and asphalt High-welded segments for durability (rotation mode only) 10mm segment height for longer bit life Perfect for: ✓ Home renovation projects ✓ Plumbing/electrical installations ✓ DIY concrete work Note: For best results, use with manual water cooling (water injection adapter sold separately). (SDS Plus adapter available separately)