Simpson 3/8 in. x 6-1/4 in. 2-Cutter Head SDS-Plus Carbide Drill Bit is a premium, professional-grade rotary hammer drill bit engineered for precision concrete, masonry, and hardened material drilling applications. Built with a carbide-tipped 2-cutter head and a hardened steel body, this SDS-Plus shank bit delivers fast, controlled penetration while maintaining tight tolerance accuracy - making it a trusted choice for contractors and tradespeople who demand consistent performance in demanding jobsite conditions.

Key Features

• 2-Cutter Carbide-Tipped Head - provides efficient material removal and clean hole geometry in concrete and masonry, reducing drilling time and operator fatigue
• SDS-Plus Shank - locks securely into SDS-Plus rotary hammers without a chuck key, allowing fast bit changes and reliable torque transfer during high-impact drilling
• 3/8 in. Diameter - sized precisely for common anchor and fastener installations, meeting the tolerance requirements of professional structural applications
• 4 in. Drilling Depth - reaches the depth needed for standard anchor embedments in concrete and block, eliminating the need to step up to a longer bit for most typical tasks
• 6-1/4 in. Overall Length - provides the reach needed to drill through surface obstructions or form material while maintaining stable control of the tool
• Hardened Steel Construction - resists flexion and wear during repeated impact cycling, extending service life across heavy-use applications
• Manufactured to the Highest Industry Standards - incorporates proprietary features that enhance both durability and drilling speed, so professionals can work faster with fewer bit replacements

Why This Product

• Purpose-built for structural anchoring work - the 3/8 in. diameter and 4 in. drilling depth align directly with common anchor bolt and concrete screw installation requirements, reducing the guesswork of spec matching on the jobsite
• Compatible with a wide range of SDS-Plus rotary hammers - the standard SDS-Plus shank fits current and older rotary hammer models from major tool brands, so you are not locked into a single tool platform
• Part of a complete Simpson Strong-Tie drilling system - designed and sourced by Simpson Strong-Tie alongside compatible anchors, screws, and installation tools, making it straightforward to specify the full system from a single trusted brand
• Professional-grade carbide tip with proprietary geometry - the 2-cutter head design is engineered to balance drilling speed with hole accuracy, so anchor installations meet the tolerance requirements called for in structural specifications

Specifications

• Brand: Simpson Strong-Tie
• Shank Type: SDS-plus Shank
• Head Type: 2-Cutter Head
• Diameter: 3/8 in.
• Drilling Depth: 4 in.
• Length: 6-1/4 in.
• Material: Hardened Steel
• Country of Origin: Germany

Available Pack Options

• MDPL03706: 1 Ea
• MDPL03706-R25: 25 Pk

Frequently Asked Questions

What rotary hammers is this SDS-Plus drill bit compatible with?

This bit features a standard SDS-Plus shank, which is the most widely adopted rotary hammer interface in the industry. It is compatible with SDS-Plus rotary hammers from major tool manufacturers including AEG, Black and Decker, Bosch, DeWalt, Hitachi, Hilti, Kango, Makita, Metabo, Milwaukee, Porter Cable, Ramset, Red Head, Ryobi, and Skil, among others.

What is the difference between a 2-cutter head and a quad head carbide tip?

A 2-cutter head has two carbide cutting edges, which provides a balance of drilling speed and durability well suited to standard concrete and masonry work. Simpson Strong-Tie also offers Quad Head bit configurations for applications where additional cutting edges are preferred. The 2-cutter head on this bit is designed to meet precise tolerance requirements while maintaining efficient material removal.

What is the actual drilling depth this bit provides?

This bit has a drilling depth of 4 in., which represents the usable depth the bit can achieve in the material being drilled. The overall length of the bit is 6-1/4 in., which includes the shank portion that seats inside the rotary hammer. Always match the required anchor embedment depth to the bit's drilling depth specification before beginning work.

Is this drill bit suitable for use with Simpson Strong-Tie Titen concrete screws?

Simpson Strong-Tie offers drill bits in multiple configurations, including versions specifically designed for use with Titen screw installations. For Titen screw applications, confirm the required pilot hole diameter matches the 3/8 in. diameter of this bit and that the head type is appropriate for the specific screw product being installed. Consult the Titen screw installation instructions to verify the correct bit diameter and drilling depth for your application.

Note: Product dimensions may differ from picture. Please see the item description above for specifications.