Simpson 1/4" x 6-1/4" 2-Cutter Head SDS-Plus Drill Bit is a premium carbide-tipped rotary hammer drill bit engineered to deliver fast, precise drilling in concrete, masonry, and similar hard materials. Manufactured in Germany to rigorous professional-grade standards, this hardened steel bit is purpose-built for contractors and tradespeople who demand reliable performance and consistent results from their SDS-plus rotohammer. With a 1/4" diameter, 4" drilling depth, and 6-1/4" overall length, it handles common anchor and fastener installation tasks with accuracy and efficiency.

Key Features

• 2-Cutter Head tip - provides aggressive material removal and faster drilling speed through concrete and masonry, reducing job time on site
• Carbide-tipped cutting edge - delivers exceptional hardness and wear resistance, extending bit life even under demanding, repetitive use conditions
• SDS-plus shank design - locks securely into SDS-plus rotohammers for efficient hammer energy transfer, minimizing bit slippage and operator fatigue
• Hardened steel body - resists flexing and stress fractures during high-impact rotary hammer operation, supporting consistent hole geometry
• 1/4" diameter with 4" drilling depth - matched to standard anchor and fastener requirements, enabling accurate placement without overdrilling
• 6-1/4" overall length - provides sufficient reach for applications where access is limited or additional clearance is needed around fixtures
• Manufactured to precise tolerance requirements - ensures compatibility with tight-tolerance anchor systems, reducing installation errors and rework
• Proprietary durability-enhancing features - combine to maintain drilling speed and ease of use over the life of the bit, lowering total cost of use

Why This Product

• Built to the highest industry standards in Germany, this SDS-plus bit is engineered specifically to meet the precision tolerances required by Simpson Strong-Tie anchor and fastening systems - giving you confidence in every installation.
• The 2-cutter carbide head removes material quickly and cleanly, making it the right choice for repetitive concrete and masonry drilling tasks where speed and hole accuracy both matter.
• The SDS-plus shank is universally compatible with SDS-plus rotohammers from major tool brands, so this bit integrates into your existing tool setup without requiring adapters or special equipment.
• Proprietary design features balance durability and drilling speed in a single bit, reducing the need for frequent replacements and keeping projects on schedule.

Specifications

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

Available Pack Options

• MDPL02506: 1 Ea
• MDPL02506-R25: 25 Pk

Frequently Asked Questions

What rotohammer brands are compatible with the SDS-plus shank on this bit?

The SDS-plus shank is a standardized interface that fits all current and older SDS-plus rotohammers from major manufacturers including AEG, Black and Decker, Bosch, DeWalt, Hitachi, Hilti, Kango, Makita, Metabo, Milwaukee, Porter Cable, Ramset, Red Head, Ryobi, and Skil, among others. If your rotohammer accepts SDS-plus bits, this bit will lock in and operate correctly.

What is the actual usable drilling depth of this bit?

This bit has a drilling depth of 4 in. The overall length is 6-1/4 in., with the remaining length accounted for by the SDS-plus shank and flute geometry needed for proper chuck engagement and debris evacuation.

What materials is this SDS-plus drill bit designed to drill through?

This carbide-tipped SDS-plus bit is designed for use with rotary hammer drills in concrete, masonry, and similar hard construction materials. The carbide tip and 2-cutter head are specifically engineered for rotary hammer impact drilling rather than standard rotary-only drilling applications.

Why is carbide used for the tip of this drill bit instead of standard steel?

Carbide is significantly harder and more wear-resistant than standard steel, allowing the cutting tip to withstand the high-impact forces generated by SDS-plus rotohammers. This means the bit maintains its cutting geometry longer under repeated use, resulting in consistent hole size and faster drilling throughout the bit's service life.

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