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Top Milwaukee MX4 SDS Drill Bits and Masonry Sets for Concrete and Stone

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Selecting the right drill bit is essential for professional-grade masonry work, concrete installation, and heavy-duty demolition. Milwaukee MX4 technology is engineered to handle the rigorous demands of rotary hammers, offering specific geometries designed for drilling into concrete, brick, and stone. Whether you are seeking a high-performance SDS-Max bit for large-diameter holes or a specialized SDS-Plus bit for precision masonry tasks, understanding the differences in shank types and bit dimensions is critical. This guide examines various Milwaukee MX4 configurations and alternative masonry sets to help you match the correct tool to your rotary hammer, ensuring efficient material penetration and long-term durability on the job site.

For contractors and DIY enthusiasts, having an organized selection of drill bits is as important as the tool itself. While Milwaukee’s MX4 line focuses on specialized tip geometry for high-impact applications, general-purpose masonry sets provide versatility for smaller home projects. Choosing between SDS-Plus and SDS-Max depends entirely on your drill's chuck system and the scale of the concrete work required. By comparing these specific options, you can identify the appropriate bit length and diameter needed to reach your target depth without compromising the integrity of your power tool or the workpiece.

How this guide was prepared: We compared the supplied product information, feature sets, ratings, and likely use cases. This is an editorial comparison and not a claim of hands-on or laboratory testing.
Best Overall
17-Piece SDS Plus Rotary Hammer Drill Bits and Chisel Set, YG8C Carbide Tips, SDS Plus Bits, Masonry Drill Bit Set for Concrete, Brick and Stone, with Storage Case, Ideal Tool for DIY, Home

1. 17-Piece SDS Plus Rotary Hammer Drill Bits and Chisel Set, YG8C Carbide Tips, SDS Plus Bits, Masonry Drill Bit Set for Concrete, Brick and Stone, with Storage Case, Ideal Tool for DIY, Home

★ 4.7 out of 5 stars

This 17-piece set serves as a comprehensive solution for users needing a variety of SDS-Plus masonry bits and chisels. It features YG8C carbide tips, which are designed for drilling through concrete, brick, and stone. The inclusion of a storage case aids in organization and protection of the bits when not in use. While this set is marketed as an ideal tool for DIY and home maintenance, it offers a broad range of sizes that can accommodate various anchoring or demolition tasks. With a high customer rating of 4.7 stars, it stands out for its value and utility in residential settings. This set provides the necessary versatility for those who require multiple bit sizes and chiseled edges for diverse masonry applications, rather than relying on a single specialized bit.

Best for: DIYers and homeowners needing a versatile masonry bit and chisel variety pack.

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Highlights

  • 17-piece kit includes bits and chisels
  • Durable YG8C carbide tips
  • Includes dedicated storage case
  • Rated 4.7 out of 5 stars

Keep in mind

  • Not specified for industrial-grade, heavy-duty continuous use
  • May lack the specific MX4 metallurgy found in professional Milwaukee lines
Best Value
48-20-7266 SDS-Plus 4Ct Mx4 1-1/4" x 16" x 18"

2. 48-20-7266 SDS-Plus 4Ct Mx4 1-1/4" x 16" x 18"

★ 4.3 out of 5 stars

The 48-20-7266 is a 1-1/4" x 16" x 18" SDS-Plus bit that utilizes the 4-cutter MX4 design. This specific geometry is engineered for rotary hammer applications where efficiency in concrete is paramount. With a 4.3-star rating, this bit is designed to navigate the challenges of drilling large-diameter holes in masonry substrates. The SDS-Plus shank indicates compatibility with standard rotary hammers commonly used in light-to-medium construction tasks. Because of its 16-inch usable length, it is suitable for deeper drilling requirements where stability and debris removal are necessary. Users should ensure their rotary hammer is rated for this diameter to maintain optimal performance and bit longevity during operation.

Best for: Drilling large-diameter holes into concrete using an SDS-Plus rotary hammer.

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Highlights

  • Features 4-cutter MX4 geometry
  • 1-1/4 inch diameter for large holes
  • 16-inch usable drilling length
  • SDS-Plus shank compatibility

Keep in mind

  • May place higher strain on smaller SDS-Plus rotary hammers
  • Slightly lower rating suggests potential variation in user experience
Best Premium
Electric - SDS-MAX 4CT MX4 3/4 X 17 X 21

3. Electric - SDS-MAX 4CT MX4 3/4 X 17 X 21

★ 5.0 out of 5 stars

Designed for heavy-duty applications, this 3/4" x 17" x 21" SDS-Max bit incorporates the 4-cutter MX4 technology. The SDS-Max shank is intended for larger, more powerful rotary hammers, providing a secure connection for high-impact drilling tasks. Holding a perfect 5.0-star rating, this bit is recognized for its performance in masonry environments. The 17-inch usable length allows for significant depth penetration in concrete, brick, and stone. The 4-cutter design is typically associated with better debris clearance and reduced vibration, which can lead to smoother drilling experiences. It is a robust choice for users requiring a reliable, high-diameter bit capable of handling the force generated by industrial-grade SDS-Max power tools.

Best for: Deep, high-diameter drilling in concrete with SDS-Max rotary hammers.

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Highlights

  • Professional SDS-Max shank design
  • 4-cutter MX4 head geometry
  • 17-inch usable length for deep holes
  • Maintains a 5.0-star rating

Keep in mind

  • Requires a compatible SDS-Max rotary hammer
  • Not suitable for smaller standard SDS-Plus power tools
Best Compact
Electric - SDS-Plus 4CT MX4 7/8 X 8 X 10

4. Electric - SDS-Plus 4CT MX4 7/8 X 8 X 10

This SDS-Plus 4-cutter MX4 bit measures 7/8" x 8" x 10". It is engineered for precision and durability when working with concrete and masonry materials. The MX4 designation signifies the use of a four-cutter head, which is designed to improve drilling speed and consistency while minimizing binding. The 8-inch usable length is appropriate for standard anchoring or fastening applications where moderate depth is required. Although this specific product does not currently have a public rating, it follows the established Milwaukee MX4 design standard, which is widely utilized in professional trades for its reliability. Users should confirm that their SDS-Plus rotary hammer supports a 7/8-inch bit diameter to ensure safe and effective operation.

Best for: Standard masonry anchoring tasks requiring a 7/8-inch hole diameter.

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Highlights

  • Utilizes 4-cutter MX4 head technology
  • 8-inch usable drilling length
  • SDS-Plus shank for standard rotary hammers
  • Designed for concrete and masonry

Keep in mind

  • Lacks current public user ratings for performance verification
  • Limited to 8 inches of usable drilling depth
Best for Pros
48-20-7091 5/32 by 7" SDS Bit

5. 48-20-7091 5/32 by 7" SDS Bit

★ 5.0 out of 5 stars

The 48-20-7091 is a 5/32" by 7" SDS-Plus bit designed for smaller, precise drilling requirements. With a 5.0-star rating, it is a highly regarded option for drilling holes suitable for smaller anchors or fasteners in concrete and masonry. The SDS-Plus shank ensures it fits the majority of compact rotary hammers. Measuring 7 inches in total length, this bit is optimized for shallow to medium depth applications. The construction of this bit follows the standard Milwaukee SDS-Plus specifications, prioritizing structural integrity and consistent material removal. It is a reliable choice for users who need a smaller diameter bit that can withstand the repetitive impact of a rotary hammer without premature tip failure.

Best for: Small-diameter anchoring and precision drilling in masonry.

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Highlights

  • 5/32-inch diameter for small fasteners
  • SDS-Plus shank compatibility
  • 7-inch overall length
  • Perfect 5.0-star rating

Keep in mind

  • Not intended for large-diameter or deep hole applications
  • Small diameter bits are inherently more susceptible to breakage if forced
Buying guide

How to choose

Drive System Compatibility

When selecting Milwaukee MX4 bits, verify your hammer drill's drive system requirements. Products like the 48-20-7266 and the 48-20-7091 are designed specifically for SDS-Plus interfaces, which are standard for smaller-to-medium rotary hammers. In contrast, tools such as the SDS-MAX 4CT MX4 3/4 x 17 x 21 require a heavy-duty SDS-MAX chuck, common on larger industrial demolition hammers. Using the incorrect shank type will prevent the bit from seating correctly, rendering the tool non-functional. Always consult your specific hammer drill manual to ensure the drive system matches the bit's shank design before finalizing your selection for masonry or concrete applications.

Bit Geometry and MX4 Technology

The MX4 designation indicates specialized four-cutter geometry engineered for consistent performance in hard materials. These bits feature carbide tips designed to manage the stresses of rotary hammering. Whether you are using the SDS-Plus 7/8 x 8 x 10 variant or the larger SDS-MAX options, the four-cutter design assists in drilling through reinforced concrete and stone. This geometry is intended to provide stability and effective material removal during operation. Ensure the diameter and length of the bit align with your specific anchoring or drilling depth requirements to maintain the structural integrity of the hole and the longevity of the carbide tip.

Sizing and Application Needs

Milwaukee SDS bits are available in various dimensions to accommodate different installation needs. The 48-20-7091, measuring 5/32 by 7 inches, is suitable for smaller diameter holes, whereas larger bits like the 1-1/4 inch diameter 48-20-7266 are built for significant masonry penetration. Consider the depth and width of your intended holes carefully. The SDS-MAX 3/4 x 17 x 21 bit provides substantial length for deep-set masonry work. Matching the bit length to the required depth prevents unnecessary tool strain, while the diameter must correspond precisely to the size of the anchors or fasteners being installed in your concrete or brick surfaces.

Material Versatility

All listed MX4 bits are optimized for masonry-related materials, including concrete, brick, and stone. The carbide tip construction is the primary feature that enables these bits to withstand the abrasive nature of these surfaces. While generic sets like the 17-piece YG8C carbide tip set offer a variety of sizes for DIY tasks, the specific Milwaukee MX4 lineup is engineered for high-impact durability in professional-grade settings. When working with reinforced concrete containing rebar, the four-cutter design helps maintain hole precision. Always verify that your drill settings are appropriate for the material density to maximize the lifespan of the carbide cutting edges.

Product Ratings and Reliability

Customer feedback provides insight into the perceived quality of these tools. The SDS-MAX 4CT MX4 3/4 x 17 x 21 and the 48-20-7091 5/32 x 7 inch bit both maintain a perfect 5.0-star rating, suggesting high user satisfaction regarding their performance and durability. The 48-20-7266 holds a 4.3-star rating, reflecting its utility in larger diameter applications. While ratings are subjective, they serve as a helpful indicator of how these specific bits perform under typical conditions. Reviewing these scores helps in assessing the consistency of Milwaukee’s manufacturing, particularly regarding the resilience of the carbide tips when subjected to repeated impacts against concrete or stone.

Common questions

Frequently asked questions

What is the difference between an SDS-Plus and an SDS-MAX bit?

SDS-Plus and SDS-MAX represent two distinct shank designs for rotary hammer drills. SDS-Plus bits, such as the 48-20-7266, are generally used for smaller, lighter-duty applications. SDS-MAX bits, like the 3/4 x 17 x 21 model, feature a larger, more robust shank designed for heavy-duty demolition and large-diameter drilling. They are not interchangeable; you must choose the bit shank that matches your specific drill's chuck system to ensure proper operation and safety.

Can I use these MX4 bits on wood or metal?

No, Milwaukee MX4 bits are specifically engineered for masonry applications, including concrete, brick, and stone. They utilize carbide tips designed for the high-impact, abrasive requirements of these materials. Using these bits on wood or metal will not yield effective results and may cause premature damage to the carbide tips or the bit geometry. For wood or metal drilling, you should select bits specifically designed for those materials and their corresponding drilling speeds.

What does the '4CT' in the product name mean?

The '4CT' refers to the four-cutter geometry present on the bit head. This design is a hallmark of the MX4 line, intended to facilitate efficient drilling through hard masonry and reinforced concrete. The four-cutter configuration helps to create more accurate, rounder holes and aids in debris removal compared to standard two-cutter bits. This feature is consistent across the various diameters and lengths available in the Milwaukee MX4 series.

Are these bits suitable for drilling into reinforced concrete?

Yes, Milwaukee MX4 bits are designed for masonry work, including concrete that may contain rebar. The four-cutter carbide tip is built to handle the resistance encountered when drilling into dense concrete. However, hitting rebar directly can cause significant wear or damage to any masonry bit. Always exercise caution and use appropriate drilling speeds to prolong the life of your bit when working in potentially reinforced materials.

Do I need a special tool to use the 17-piece YG8C carbide set?

The 17-piece SDS Plus Rotary Hammer Drill Bit and Chisel set is designed for use with rotary hammer drills equipped with an SDS-Plus chuck. Because these are SDS-Plus bits, they are compatible with standard SDS-Plus power tools. Before using, ensure your rotary hammer is set to the correct mode for drilling or chiseling, as appropriate for the specific bit you have selected from the set for your concrete or brick project.

Verdict

Bottom line

For users prioritizing professional-grade durability in concrete and masonry, the Milwaukee MX4 lineup stands out, particularly the 5.0-star rated SDS-MAX 4CT MX4 3/4 x 17 x 21 and the 48-20-7091 5/32 x 7 inch bit. These bits leverage four-cutter carbide technology to maintain hole precision in demanding environments. While the 48-20-7266 offers a larger 1-1/4 inch diameter for heavy-duty anchoring, it is vital to match the drive system to your tool. The SDS-MAX bits are clearly superior for high-torque demolition tasks, while the SDS-Plus options provide the necessary versatility for standard home and professional masonry drilling. Choosing the right Milwaukee MX4 model ensures that the bit geometry matches the mechanical force of your rotary hammer for maximum efficiency.

Deciding between these options depends primarily on your hammer drill's chuck compatibility and the specific requirements of your project. First, verify whether your tool requires an SDS-Plus or SDS-MAX shank, as these are not interchangeable. Second, determine the diameter and depth of the holes needed for your anchors or fasteners. If you require a variety of sizes for diverse DIY home repairs, a comprehensive set like the 17-piece YG8C Carbide Tip set provides broader utility. However, for specialized, high-intensity concrete drilling where reliability is paramount, investing in the specific Milwaukee MX4 SDS-Plus or SDS-MAX bits ensures consistent, high-performance results tailored to your tool’s power output.

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