The Simpson SDS-Plus Quad Head Carbide Drill Bit 1-1/8 in. x 10 in. is a premium, professional-grade rotary hammer bit engineered for demanding concrete and masonry drilling applications, including work in reinforced concrete where rebar is present. Built to the highest industry standards and conforming to ANSI Standard B212.15, this hardened steel bit pairs a chromium-nickel-molybdenum alloy body with a uniformly brazed carbide tip and a proprietary 4 x 90 deg. quad head geometry to deliver consistent, high-speed performance in the toughest structural drilling conditions.

Key Features

• Uniformly brazed carbide inserts - secure, consistent carbide bonding extends bit life and reduces the frequency of bit replacement on the job
• Centering tip - facilitates easy spot drilling so you can accurately position each hole without wandering, saving time and reducing material waste
• Chromium-nickel-molybdenum steel alloy body - provides superior hammering resilience and extended service life even under high-impact rotary hammer use
• Heat-treatment and shot-peened finish - increases surface hardness, improves drilling speed, reduces bit wear, and strengthens resistance to bending forces during demanding applications
• ANSI Standard B212.15 compliance - confirms the bit meets established dimensional and performance tolerances, ensuring reliable fit and predictable results
• High-volume, multi-flute spiral - quickly channels concrete dust out of the hole during drilling, maintaining clear cutting action and improving overall drilling speed
• 4 x 90 deg. quad head geometry - crushes through rebar and prevents the bit from sticking in reinforced concrete, keeping work moving safely and efficiently
• SDS-plus shank - locks securely into SDS-plus rotary hammers from a wide range of manufacturers, providing reliable torque transfer and quick bit changes without tools

Why This Product

• Built for reinforced concrete - the quad head 4 x 90 deg. tip geometry is specifically designed to power through rebar without binding, making this bit a dependable choice for structural anchoring, through-bolting, and other applications where embedded steel is a constant obstacle
• Professional durability engineered into every layer - the combination of a chromium-nickel-molybdenum alloy body, heat-treated hardening, and shot-peened surface finishing means this bit is constructed to hold up through extended, heavy-use drilling sessions rather than wearing out prematurely
• Faster, cleaner holes with less effort - the multi-flute spiral actively evacuates concrete dust throughout the drilling process, reducing friction buildup, keeping the cutting edge engaged, and helping operators work faster with less physical strain
• Broad compatibility for jobsite flexibility - the SDS-plus shank design works with current and older SDS-plus rotary hammers from a wide range of major tool brands, so this bit integrates easily into virtually any existing professional tool setup without adapters or special chucks

Specifications

• MPN: MDPL11210Q
• Brand: Simpson Strong-Tie
• Diameter: 1-1/8 in.
• Overall Length: 10 in.
• Drilling Depth: 8 in.
• Shank Type: SDS-plus Shank
• Head Type: Quad Head 4x Drill Bit
• Material: Hardened Steel
• Tip Material: Carbide
• Compliance: ANSI Standard B212.15
• Country of Origin: Germany

Frequently Asked Questions

What type of shank does the MDPL11210Q use, and which rotary hammers is it compatible with?

This drill bit features an SDS-plus shank, which is compatible with all current and older SDS-Plus rotohammers from a wide range of manufacturers including AEG, Black & Decker, Bosch, DeWalt, Hitachi, Hilti, Kango, Makita, Metabo, Milwaukee, Porter Cable, Ramset, Red Head, Ryobi, and Skil.

What is the Quad Head geometry, and why does it matter for drilling in reinforced concrete?

The Quad Head features a 4 x 90 deg. head geometry that is specifically designed to crush through rebar and prevent the bit from sticking in reinforced concrete, making it a reliable choice for structural drilling applications where rebar is present.

What is the actual drilling depth of this bit versus its overall length?

The MDPL11210Q has an overall length of 10 in., with an effective drilling depth of 8 in. The difference accounts for the SDS-plus shank engagement length within the rotary hammer chuck.

What construction and finishing processes contribute to the durability of this drill bit?

The bit body is made from a chromium-nickel-molybdenum steel alloy for superior hammering resilience. It undergoes heat-treatment procedures and a shot-peened finish that increase surface hardness, improve drilling speed, reduce wear, and enhance resistance to bending forces, all contributing to an extended service life.

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