The Simpson 3/4 in. x 18 in. SDS-plus Shank Drill Bit is a premium-quality, professional-grade carbide-tipped bit built to handle demanding concrete and masonry drilling applications. Engineered to precise tolerance requirements and manufactured to the highest industry standards, this bit features a 2-Cutter Head design and SDS-plus shank compatibility, making it an ideal choice for contractors and tradespeople who rely on consistent, high-speed performance in rotohammer drilling. Proprietary design features work together to enhance durability, improve drilling speed, and simplify use on the job site.

Key Features

• Uniformly brazed carbide inserts - consistent bonding across the tip extends bit life so you replace bits less often on long drilling runs
• Centering tip design - facilitates easy spot drilling so you can start holes accurately without walking or slipping
• Chromium-nickel-molybdenum steel alloy body - ensures hammering quality and extended service life, holding up under the repeated impact stress of rotohammer use
• Heat-treatment procedures and shot-peened finish - increase surface hardness and drilling speed, reduce bit wear, and improve resistance to bending forces so the bit stays straight and effective under load
• Chisel-shaped drill-bit head - penetrates material efficiently and directs concrete dust into the multi-flute spiral, keeping the cutting zone clear for faster progress
• High-volume, multi-flute spiral - quickly channels concrete dust from the hole to improve drilling speed and reduce clogging during deep or extended drilling
• Conforms to ANSI Standard B212.15 - meets established industry tolerances so the bit fits and performs as expected in standard SDS-plus rotohammers

Why This Product

• Professional-grade construction built for heavy use - the combination of a chromium-nickel-molybdenum alloy body, heat-treated finish, and uniformly brazed carbide inserts delivers the durability that repeat drilling in concrete and masonry demands, reducing downtime from premature bit failure
• Engineered for drilling speed, not just depth - the chisel-shaped head and high-volume multi-flute spiral work together to clear concrete dust continuously, maintaining faster drilling speeds throughout the full 16 in. drilling depth without repeated withdrawal to clear debris
• Designed to the strictest tolerances - ANSI Standard B212.15 compliance and precise manufacturing standards mean consistent fit in SDS-plus rotohammers and predictable, reliable performance from bit to bit
• Extra length for deep anchor and fastener applications - the 18 in. overall length with a 16 in. drilling depth gives tradespeople the reach needed for deep concrete anchor installations where standard-length bits simply cannot get the job done

Specifications

• MPN: MDPL07518
• Brand: Simpson Strong-Tie
• Shank Type: SDS-plus Shank
• Head Type: 2-Cutter Head
• Diameter: 3/4 in.
• Overall Length: 18 in.
• Drilling Depth: 16 in.
• Material: Hardened Steel
• ANSI Standard: B212.15
• Country of Origin: Germany

Frequently Asked Questions

What type of shank does the MDPL07518 drill bit use?

The MDPL07518 features an SDS-plus shank, which is compatible with SDS-plus rotohammers and allows for quick, tool-free bit changes.

What is the drilling depth and overall length of this bit?

This drill bit has a drilling depth of 16 in. and an overall length of 18 in., with a 3/4 in. diameter.

What makes the carbide inserts on this bit last longer?

The carbide inserts are uniformly brazed, which provides consistent bonding across the tip and results in longer bit life compared to unevenly applied inserts.

How does the bit manage concrete dust during drilling?

The chisel-shaped drill-bit head directs concrete dust into the high-volume, multi-flute spiral, which quickly channels the dust out of the hole to improve drilling speed and efficiency.

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