The Simpson SDS-Plus Quad Head Carbide Drill Bit 5/8 in. x 12 in. is a premium, professional-grade rotary hammer bit engineered to meet the most demanding concrete and masonry drilling applications on the job site. Built to the highest industry standards and conforming to ANSI Standard B212.15, this carbide-tipped bit features a proprietary 4 x 90 deg. Quad Head geometry designed to crush through rebar and prevent sticking in reinforced concrete, giving contractors and tradespeople the speed, precision, and durability they need when tolerances matter most.

Key Features

• Uniformly brazed carbide inserts - deliver consistent contact and bond strength across the tip, extending bit life and reducing the frequency of replacement on high-volume drilling jobs.
• Centering tip design - facilitates easy spot drilling so the bit seats accurately from the first strike, reducing walkoff and improving hole placement in concrete and masonry.
• Chromium-nickel-molybdenum steel alloy body - provides the structural integrity needed for sustained hammering action and resists the fatigue and deformation that shorten bit service life under heavy use.
• Heat-treatment procedures and shot-peened finish - increase surface hardness, reduce drill bit wear, improve resistance to bending forces, and boost drilling speed, keeping the bit performing longer between replacements.
• 4 x 90 deg. Quad Head geometry - crushes through rebar and prevents sticking in reinforced concrete, reducing downtime and protecting both the bit and the rotary hammer during tough drilling conditions.
• High-volume, multi-flute spiral - quickly channels concrete dust away from the hole as drilling progresses, improving drilling speed and reducing heat buildup that can degrade bit performance.
• ANSI Standard B212.15 compliance - confirms the bit meets established dimensional and performance tolerances, ensuring reliable, predictable fit with compatible tooling and consistent hole quality.
• SDS-plus shank - provides a tool-free, positive-locking connection with SDS-plus rotary hammers, enabling fast bit changes without interrupting workflow on the job site.

Why This Product

• Built for reinforced concrete drilling - The 4 x 90 deg. Quad Head geometry is specifically engineered to crush through rebar rather than deflect or bind, making this bit a practical choice for structural concrete work where rebar interference is a constant challenge.
• Professional-grade construction from tip to shank - A chromium-nickel-molybdenum steel alloy body combined with uniformly brazed carbide inserts, heat treatment, and a shot-peened finish means this bit is built to withstand the repeated impact forces of rotary hammer drilling without premature wear.
• Faster drilling with less cleanup - The high-volume, multi-flute spiral actively evacuates concrete dust from the hole during drilling, keeping the cutting zone clear and maintaining drilling speed so work moves forward without repeated bit withdrawal to clear debris.
• Engineered to verified tolerances - Conformance to ANSI Standard B212.15 and manufacture to precise dimensional requirements means contractors can trust consistent hole sizing and reliable tool compatibility across demanding professional applications.

Specifications

• Model Number (MPN): MDPL06212Q
• Brand: Simpson Strong-Tie
• Shank Type: SDS-plus Shank
• Head Type: Quad Head 4x Drill Bit
• Diameter: 5/8 in.
• Overall Length: 12 in.
• Drilling Depth: 10 in.
• Material: Hardened Steel (Chromium-Nickel-Molybdenum Steel Alloy Body with Carbide Tip)
• Standard Compliance: ANSI Standard B212.15
• Country of Origin: Germany

Frequently Asked Questions

What type of shank does the MDPL06212Q use, and which rotary hammers is it compatible with?

The MDPL06212Q features an SDS-plus shank, which provides a tool-free, positive-locking connection with SDS-plus rotary hammers. This shank type is a widely adopted industry standard compatible with SDS-plus rotohammers from many major tool brands.

What makes the Quad Head geometry on this drill bit beneficial for concrete drilling?

The 4 x 90 deg. Quad Head geometry is specifically engineered to crush through rebar and prevent the bit from sticking when drilling in reinforced concrete. This design improves drilling efficiency and helps protect the bit and the tool during demanding applications.

How does the bit's construction contribute to its durability and service life?

The bit body is constructed from a chromium-nickel-molybdenum steel alloy, which ensures hammering quality and extended service life. Additionally, heat-treatment procedures and a shot-peened finish increase surface hardness, improve resistance to bending forces, and reduce drill bit wear. Uniformly brazed carbide inserts further contribute to longer bit life.

How does the flute design affect drilling performance in concrete?

The high-volume, multi-flute spiral design quickly channels concrete dust out of the hole during drilling. By efficiently evacuating debris, the flutes help maintain drilling speed and reduce heat buildup, improving overall performance and extending the life of the bit.

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