The Simpson SDS-max Quad Head Drill Bit 1-3/8 in. x 17 in. Carbide is a premium rotary hammer bit engineered for heavy-duty concrete and reinforced concrete drilling where speed, accuracy, and long service life are non-negotiable. Built on a chromium-nickel-molybdenum steel alloy body with uniformly brazed carbide inserts and a high-volume, double-helix quad-head design, this bit is purpose-built for professional and industrial applications that demand consistent performance through the toughest substrates - including rebar-laden concrete.

Key Features

• Quad-Head Dual-Cutter Design with Patented Reinforced Core Flute - The high-volume, double-helix geometry maximizes energy transfer from the rotary hammer into the bit tip, translating to faster drilling speeds and improved durability on demanding jobsites.
• 4 x 90 deg. Head Geometry - Specifically engineered to crush through rebar and prevent sticking in reinforced concrete, so work continues forward without interruption even in heavily reinforced slabs and walls.
• Uniformly Brazed Carbide Inserts - Precision brazing ensures consistent contact across the full cutting surface, extending bit life and reducing the frequency of bit changes during high-production drilling.
• Self-Centering Tips - Accurate hole placement begins at first contact, minimizing bit walk and producing cleaner, more precise holes for anchoring and fastening applications.
• Chromium-Nickel-Molybdenum Steel Alloy Body - High-grade alloy construction delivers superior hammering quality and extended service life under the repeated impact loads of SDS-max rotary hammer use.
• Heat-Treatment and Shot-Peened Finish - Increases surface hardness, boosts drilling speed, reduces bit wear, and improves resistance to bending forces, keeping the bit performing longer between replacements.
• High-Volume, Multi-Flute Spiral - Rapidly channels concrete dust out of the hole during drilling, maintaining a clear cutting path that improves speed and reduces heat buildup.
• Proprietary Flute Geometry - Reduces vibration and optimizes impact energy transfer, lowering operator fatigue and noise exposure during extended drilling sessions.
• ANSI Standard B212.15 Conformance - Meets recognized industry dimensional and performance standards, providing confidence in fit, compatibility, and consistent results across SDS-max rotary hammer platforms.

Why This Product

• Built to Perform in Reinforced Concrete - The 4 x 90 deg. quad-head geometry is specifically designed to crush through rebar rather than deflect or bind, making this bit a reliable choice for structural concrete drilling where rebar interference is a constant challenge.
• Engineered for Speed Without Sacrificing Durability - The combination of uniformly brazed carbide inserts, heat-treated alloy body, and patented reinforced core flute works together to maintain fast drilling rates over a longer service life, reducing downtime and replacement costs on high-production sites.
• Reduced Operator Fatigue on Long Drilling Tasks - The proprietary flute geometry actively reduces vibration and noise during operation, and the self-centering tip eliminates the physical effort of correcting bit walk, making sustained heavy-duty drilling more manageable.
• Premium Materials and Proven Standards - A chromium-nickel-molybdenum steel alloy body, carbide-tipped head, shot-peened finish, and conformance to ANSI Standard B212.15 reflect a level of material quality and engineering discipline appropriate for professional concrete anchoring and construction applications.

Specifications

• Model Number (MPN): MDMX13717Q
• Brand: Simpson Strong-Tie
• Shank Type: SDS-max Shank
• Head Type: Quad Head 4x Drill Bit
• Diameter: 1-3/8 in.
• Overall Length: 17 in.
• Drilling Depth: 12 in.
• Material: Hardened Steel (Chromium-Nickel-Molybdenum Steel Alloy Body with Carbide Inserts)
• ANSI Standard: B212.15
• Country of Origin: Germany

Approved Applications

• Drilling into concrete and reinforced concrete
• Cutting through rebar in reinforced concrete applications
• High-production rotary hammer drilling requiring maximum energy transfer and durability
• Precision hole placement in demanding construction and anchoring applications
• Use with SDS-max rotary hammers across professional and industrial jobsite environments