The Simpson MDPL08708Q 7/8 in. x 8 in. SDS-plus Quad-Head Drill Bit is a premium, professional-grade carbide-tipped drill bit engineered by Simpson Strong-Tie to deliver exceptional performance in demanding concrete drilling applications. Featuring a proprietary 4 x 90 deg. Quad Head geometry, this bit is purpose-built to crush through rebar and resist sticking in reinforced concrete, making it an ideal choice for professionals who require speed, durability, and precision on the job site.

Key Features

• Uniformly brazed carbide inserts result in longer bit life
• Most bits contain a centering tip that facilitates easy spot drilling
• Chromium-nickel-molybdenum steel alloy body ensures hammering quality and extended service life
• Heat-treatment procedures and shot-peened finish increase surface hardness, drilling speed, reduces drill bit wear and improves resistance to bending forces
• Drill bits conform to ANSI Standard B212.15
• High-volume, multi-flute spiral quickly channels concrete dust from the hole to improve drilling speed
• 4 x 90 deg. head geometry crushes through rebar and prevents sticking in reinforced concrete
• SDS-plus shank for secure, tool-free bit changes on compatible rotohammers
• Manufactured to precise tolerance requirements for consistent, repeatable results

Specifications

• Model Number: MDPL08708Q
• Diameter: 7/8 in.
• Overall Length: 8 in.
• Drilling Depth: 6 in.
• Shank Type: SDS-plus
• Head Type: Quad Head 4x Drill Bit
• Material: Hardened Steel with Carbide Tip
• Conforms To: ANSI Standard B212.15
• Country of Origin: Germany (DE)

Frequently Asked Questions

What type of shank does the MDPL08708Q use, and which rotohammers is it compatible with?

The MDPL08708Q features an SDS-plus shank, which provides a secure, tool-free bit change and is compatible with all SDS-plus rotohammers. This is the industry-standard shank format supported by rotohammers from many major tool brands.

What makes the Quad Head geometry on this drill bit different from a standard tip?

The 4 x 90 deg. Quad Head geometry is specifically designed to crush through rebar encountered in reinforced concrete while also preventing the bit from sticking or binding during drilling. This provides greater efficiency and control compared to standard drill bit tip designs.

What is the actual drilling depth of this bit?

While the overall length of the MDPL08708Q is 8 inches, the effective drilling depth is 6 inches. This distinction is important when planning anchor depths or hole depths for fastening applications.

What quality standards and materials are used in the construction of this drill bit?

This drill bit is built from a chromium-nickel-molybdenum steel alloy body and features uniformly brazed carbide inserts. It undergoes heat-treatment procedures and a shot-peened finish to increase surface hardness and resist wear. The bit also conforms to ANSI Standard B212.15, ensuring it meets established dimensional and performance requirements.

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