Best Core Hex-shank Drill Bits of 2025

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Core Hex-shank Drill Bits are a type of drill bit designed for drilling holes in various materials such as wood, metal, and plastic. These drill bits have a hexagonal shank that fits securely into a hexagonal chuck, providing a stable and secure grip during use. The bits come in a range of sizes and are made from high-quality materials, ensuring durability and longevity. These drill bits are ideal for both DIY enthusiasts and professionals, providing precision and accuracy with every use.
At a Glance: Our Top Picks
Top 10 Core Hex-shank Drill Bits
Starrett 240mm Hex Adaptor for Core Drills
The Starrett Hex Adaptor is designed with tough materials, featuring a sturdy steel body that ensures durability and resilience. Its substantial 240 mm shank length allows you to tackle a wide range of drilling applications with ease. You will appreciate the secure connection it provides, enabling a precise link between your drill and core drill bit for smooth performance. Additionally, this adaptor is compatible with both core drills and rotary power drills, making it a versatile choice for various projects.
Silverline 783138 Hex Core Drill Arbor 100 mm
The Silverline Hex Core Drill Arbor is designed for efficiency and ease of use. It includes an ejector drift key, which helps you quickly remove the taper guide drill, saving you time during your projects. This arbor fits both 12 inch BSP TCT and diamond core drills, making it versatile for various drilling applications. Crafted from hardened steel, it ensures durability and strength, providing you with confidence in your work. Whether you're a professional or a DIY enthusiast, this tool will enhance your drilling experience.
TIMCO 88mm Diamond GP Core Bit
The TIMCO Diamond Core Bit is designed for efficient drilling with its 88mm hex adaptor, allowing you to fit it easily to a 1/2" BSP fitting. The black finish not only adds a sleek look but also enhances durability, ensuring it withstands tough drilling tasks. This core bit is perfect for various applications, providing you with the convenience of quick and clean cuts in different materials. You will find this tool an essential addition to your toolkit for both professional and DIY projects.
Spyder Rapid Core Eject Arbor, 3/8" Hex
The Spyder Rapid Arbor is designed for efficient plug removal, offering a remarkable speed that is up to five times faster than traditional methods. This means you can save valuable time on your projects. It is suitable for use on wood, plastic, and metal, making it a versatile tool for various applications. The tooless ejection feature allows for quick and easy removal of the plug, providing convenience during your work. Remember, it is intended for use with rotary drills only, ensuring optimal performance without the need for a hammer function.
SHDIATOOL 2PK M14 to 3/8" Hex Adapter
The SHDIATOOL M14 Hex Adapter is a versatile tool designed for connecting M14 male thread drill core bits to a 3/8" hexagon shank. With a total length of 53MM and a shank length of 28MM, this adapter is suitable for both hand drills and electric drills, allowing you to use your core bits with ease. Made from good quality steel and featuring surface nickel plating, it ensures durability and longevity, giving you peace of mind during your projects.
GRENPRO 22-Piece Allen Wrench Drill Bit Set
The GRENPRO Allen Wrench Set includes 22 pieces of high-quality hex head drill bits designed for various tasks. With both metric and SAE sizes, you can easily find the right fit for your screws. The torsion zone feature absorbs torque peaks, helping to prevent breakage during heavy use. Additionally, the strong magnetic tips ensure accurate screw locking, making it easier for you to pick up screws without frustration. Crafted from durable S2 alloy steel, these bits resist rust and enhance longevity, providing you with reliable performance for years to come.
AIMLENTOOL 17pcs Self-Centering Drill Bit Set
The AIMLENTOOL VIX Bit Set is a high-quality 17-piece self-centering drill bit collection designed for woodworking and hinge applications. Made from durable high-speed steel, these bits offer excellent drilling performance and are rust-proof, ensuring longevity. With eight different sizes available, you can easily find the right bit for your project needs. The automatic centering feature enhances accuracy, making your drilling tasks quicker and more efficient, while the double-hole design prevents sawdust blockages, keeping your work area clean.
STONE REEF 68 mm SDS Plus Drill Bit for Concrete
The STONE REEF Drill Bit is designed for precision and cleanliness, allowing you to make accurate cuts in concrete and masonry. This is particularly beneficial for electricians and construction workers needing to install sockets and cavity wall sockets. Made from high-quality materials, it provides impressive hardness and efficiency, making it perfect for drilling into tough surfaces. Its SDS Plus extraction ensures compatibility with all SDS Plus hammer drills, enabling quick changes and efficient work on your projects.
BRETREEAD 20PCS Hex Drill Bit Set
The BRETREEAD Hex Bit Set is a versatile collection of 20 hex drill bits, featuring both metric and SAE sizes. Made from S2 alloy steel, these bits are designed for strength and durability, ensuring they withstand tough tasks without breaking. The torsion zone design absorbs torque peaks, providing you with peace of mind during use. With a 4-inch length, this set allows for easier access to difficult angles, improving your efficiency in various projects, from home repairs to automotive work.
Bosch Professional Power Change Plus Adapter
The Bosch Power Change Adapter offers an easy solution for quickly changing hole saws with just one click. Its robust design and improved materials provide a stable and precise system, ensuring that you can work efficiently. The enhanced hexagonal shaft increases stability, making it easier for you to tackle various tasks. Additionally, the fast core removal feature allows you to unlock, tilt, and push out cores swiftly, saving you valuable time during your projects.
Frequently Asked Questions (FAQs)
1. What are hex shank drill bits for?
A hex shank drill bit will be used in conjunction with a drill press. A hex shank drill bit is a cutting device designed for use with a drill, drill press, or other rotating instrument.
2. Can you use hex shank bits in a drill?
The answer is no. As explained, regular drill bits are not designed to withstand the stress of the torque an impact driver outputs. As a result, if stress-tested, regular drill bits with hex ends placed in impact drivers can easily snap which could also break the impact driver itself.
3. Is hex shank the same as SDS?
Straight shanks are used for keyed or keyless chucks (from 10 to 13 mm). SDS shanks are used for SDS+ or SDS Max chucks. Hex shanks are used for screw guns or electric screwdrivers.
4. What is a core drill bit?
A core drill is a cylindrical drill with a hollow bit that allows you to create a perfectly round hole in the material that you're drilling. Because the bit is hollow, the drilling material gets extracted from the centre.
During our core hex-shank drill bit research, we found 16 core hex-shank drill bit products and shortlisted 10 quality products. We collected and analyzed 6,301 customer reviews through our big data system to write the core hex-shank drill bits list. We found that most customers choose core hex-shank drill bits with an average price of £14.85.
The core hex-shank drill bits are available for purchase. We have researched hundreds of brands and picked the top brands of core hex-shank drill bits, including Starrett, Silverline, TIMCO, Spyder, SHDIATOOL.

Jennifer Fraser is a licensed contractor specializing in sales, maintenance, and kitchen, bathroom, and home appliances, tools, and utilities. She owns a store in Leeds where you can get any home and tool appliance. Jenny has a degree in literature, but she combines her knowledge and experience with her degree to publish DIY articles on solving home appliances issues to keep up the family enterprise.