The Simpson SDS-max Quad Head Drill Bit, 3/4 in. x 13 in. Carbide is a premium rotary hammer bit engineered by Simpson for high-demand concrete and masonry drilling. Built around a quad-head dual-cutter design and a patented high-performance reinforced core flute, this bit is purpose-built for professionals tackling reinforced concrete, rebar-laden slabs, and structural masonry applications where speed, accuracy, and operator comfort all matter. Its proprietary flute geometry optimizes impact energy transfer from the rotary hammer into the tip, so every stroke works harder and drilling fatigue stays low.

Key Features

• Uniformly brazed carbide inserts - deliver consistent tip integrity across the full cutting edge, extending service life in abrasive concrete and masonry materials
• Self-centering tips - start holes precisely where intended, reducing walk-off and the need for rework on structural drilling tasks
• Chromium-nickel-molybdenum steel alloy body - provides the hammering toughness and fatigue resistance needed to sustain high-cycle rotary hammer use without premature failure
• Heat-treatment procedures and shot-peened finish - increase surface hardness, improve resistance to bending forces, reduce drill bit wear, and help maintain drilling speed over the life of the bit
• 4 x 90 deg. head geometry - crushes through rebar and prevents sticking in reinforced concrete, keeping production moving on the most demanding pours and slabs
• High-volume, multi-flute spiral - quickly channels concrete dust out of the hole during drilling, reducing clogging and maintaining cutting efficiency throughout the bore
• Proprietary flute geometry - reduces vibration and optimizes impact energy transfer from the rotary hammer into the drill bit tip, improving drilling speed while lowering noise and physical stress on the operator
• Patented, high-performance, reinforced core flute - maximizes energy transfer on every stroke so the quad-head bit performs consistently in heavy reinforced concrete applications
• Conforms to ANSI Standard B212.15 - meets recognized industry dimensional standards, ensuring reliable fit and compatibility for professional construction work

Why This Product

• Built for reinforced concrete without compromise - the 4 x 90 deg. quad-head geometry is specifically engineered to crush through rebar and resist sticking, making this bit a dependable choice for structural concrete drilling where standard bits bind or stall
• Engineered to reduce operator fatigue on long drilling runs - the combination of proprietary flute geometry, shot-peened finish, and optimized impact energy transfer actively works to minimize vibration and noise transferred to the user, supporting productivity across full work days
• Premium materials throughout for lasting performance - uniformly brazed carbide inserts, a chromium-nickel-molybdenum alloy body, and a heat-treated finish work together to extend bit life in the kind of high-cycle, high-impact conditions that quickly wear out lower-grade tooling
• Precision from the first hole to the last - self-centering tips combined with a high-volume dust-clearing spiral help maintain accurate, clean holes consistently, reducing layout errors and cleanup time on professional job sites

Specifications

• Model Number (MPN): MDMX07513Q
• Brand: Simpson Strong-Tie
• Shank Type: SDS-max Shank
• Head Type: Quad Head - 4x Drill Bit
• Diameter: 3/4 in.
• Overall Length: 13 in.
• Drilling Depth: 8 in.
• Material: Hardened Steel (Chromium-Nickel-Molybdenum Steel Alloy)
• Tip Material: Carbide
• Finish: Shot-Peened
• Standards Compliance: ANSI Standard B212.15
• Country of Origin: Germany

Note: Product dimensions may differ from picture. Please refer to the specifications above for accurate measurements.

Approved Applications

• Drilling into reinforced concrete - the 4 x 90 deg. head geometry crushes through rebar and prevents sticking
• Masonry and concrete demolition drilling with SDS-max rotary hammers
• High-demand drilling tasks requiring precise, self-centered hole placement
• Applications where reduced operator vibration and fatigue are critical
• Professional construction and structural applications requiring conformance to ANSI Standard B212.15