Best Spline Core Drill Bits of 2026
* We independently evaluate all recommended products and services. If you click on links we provide, we may receive compensation.
Spline core drill bits are powerful and efficient tools that are widely used in construction and renovation projects. These drill bits have a unique design that allows them to drill through tough materials like concrete, brick, and stone with ease. They are made from high-quality materials and feature a durable spline shank that provides a secure and stable connection to the drill. Spline core drill bits come in a variety of sizes and shapes, making them suitable for various applications. They are ideal for creating large holes for pipes, cables, and ventilation systems, and for creating precise openings for anchors and fasteners.
At a Glance: Our Top Picks
#TOP 1
9.8
#TOP 2
9.7
#TOP 3
9.5
Top 10 Spline Core Drill Bits
Wet Drill Core Bits for Concrete and Hard Masonry
These core drill bits are designed to drill through concrete, concrete with light steel reinforcement, or hard masonry. The embedded diamond concentration ensures a longer core life and efficient drilling. The 1-1/4"-7 threaded arbor and 14" drilling depth make them versatile for different projects. They are recommended for use with handheld core drills or dedicated core drill rigs in rotary mode only.
SALI Wet Diamond Core Drill Bits 5"/127mm Diameter
SALI Diamond Core Drill Bits 1 1/8" Diameter 10"/254mm Drilling Depth 5/8-11" Thread Core Bit Turbo Laser-Welded Segments
SALI Diamond Core Drill Bits 1 1/4" Diameter 10"/254mm Drilling Depth 5/8-11" Thread Core Bit Turbo Laser-Welded Segments
1-3/8" High Performance Diamond Core Bit
HBKEEN Wet Diamond Core Bit for Hard Concrete and Masonry
HBKEEN Wet Core Drill Bits are designed for drilling hard concrete, reinforced concrete, hard brick, block and other hard masonry. These 3 inches Laser Welded Diamond Wet Drilling Core Bits have a 1-1/4" - 7 threaded arbor and can drill up to 14" with mesh segments. They are fast, smooth, and have a long life. They are compatible with hand held drill and drilling machine, and can only be used in wet conditions.
DECKRKAT 7 Piece Diamond Drill Bits Set
Introducing the DECKRKAT Diamond Drill Bits Set, a complete set of 7 diamond drill bits designed for drilling through hard materials such as tiles, ceramics, glass, and stones. With sizes ranging from 3/16" to 1/2", this set is versatile and perfect for a wide range of drilling needs. The innovative dry drilling technology, combined with the integrated coolant system, keeps the bits cool and prolongs their life. Each bit is designed with vacuum brazed diamond technology for clean and precise drilling, and the side flute design removes debris quickly. The round shank design makes these bits compatible with most popular electric drills, angle grinders, and bench drills. Plus, the set comes in a heavy-duty storage case for easy access and safe keeping. Get the job done quickly and efficiently with the DECKRKAT Diamond Drill Bits Set.
DaduoRi 2" Pro Dry Core Drill Bit
DaduoRi 2" Dry Core Drill Bit
BLUEROCK Tools 6" Diamond Wet Coring Bit
The BLUEROCK 6" Diamond Wet Coring Bit is a high-quality concrete core drill ideal for wet core drilling through concrete, rebar reinforced, asphalt, rock, stone, and tile masonry. With an industry-standard 1 1/4" thread type, this diamond tip coring bit directly fits BLUEROCK Z1 Core Drills. The 6" outside diameter and 14.5" inside barrel depth make it easy to use in various applications. The overall length of approximately 17" provides enough space for the drill to go deep into the material. Visit the BLUEROCK brand page to find diamond core bit sets and all sizes.
Frequently Asked Questions (FAQs)
1. What is a spline drill bit?
The Spline shank bits are carbide-tipped bits used for drilling holes in concrete, brick or block base material. The tip of the bit is made out of carbide. The Spline drive carbide-tipped bits are used in electro-pneumatic hammer drills.
2. What is the difference between SDS and spline?
Spline bits have become much less common than SDS Plus or SDS Max. They are very similar in capacity and variety to the range available to SDS Max bits. The major difference is that chipping bits and drilling bits that are used for spline drive drills have different shanks as one is smooth and the other has splines.
3. What are the 5 types of drill bits?
Drill bits are designed to drill holes in a variety of different common materials. These include different types of wood, metal, plastic, ceramic tile, porcelain and concrete.
4. What are the best core bits?
If you want quality core drill bits, my top pick is the Bluerock 1-Inch to 6-Inch Core Bit Set, which is made for longer materials. The Binota SDS Plus Concrete Hole Saw Set has good packaging while the Bosch SDS Max Rotary Hammer Core Bits has a special design that maximizes energy transfer.
During our spline core drill bit research, we found 24 spline core drill bit products and shortlisted 10 quality products. We collected and analyzed 12,218 customer reviews through our big data system to write the spline core drill bits list. We found that most customers choose spline core drill bits with an average price of $59.92.
The spline core drill bits are available for purchase. We have researched hundreds of brands and picked the top brands of spline core drill bits, including EDiamondTools, SALI, HBKEEN, DECKRKAT, DaduoRi. The seller of top 1 product has received honest feedback from 114 consumers with an average rating of 4.7.
Harry Stack owns a small hardware store, his career landed him a depth of knowledge in categories such as tools, equipment, machinery and hardware. In his spare time, he usually repairs furniture, safes and appliances, and he knows how to make simple repairs to plumbing or electrical fixtures. His hobbies also include woodworking and fishing.