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
• Premium-quality, professional-grade construction designed to meet precise tolerance requirements
• Incorporates proprietary features that enhance durability, drilling speed, and ease of use

Specifications

• MPN: MDPL08712Q
• Brand: Simpson Strong-Tie
• Diameter: 7/8 in.
• Overall Length: 12 in.
• Drilling Depth: 10 in.
• Shank Type: SDS-plus Shank
• Head Type: Quad Head 4x Drill Bit
• Material: Hardened Steel
• Standards Compliance: ANSI Standard B212.15
• Country of Origin: DE

Frequently Asked Questions

What type of shank does the MDPL08712Q use, and which rotary hammers is it compatible with?

The MDPL08712Q features an SDS-plus shank, which is the industry-standard quick-connect system compatible with SDS-plus rotary hammers. This shank type allows for tool-free bit changes and ensures a secure, play-free connection during hammering operations.

What makes the Quad Head tip geometry beneficial when drilling in reinforced concrete?

The 4 x 90 deg. Quad Head geometry is specifically engineered to crush through rebar and prevent the bit from sticking in reinforced concrete. This design distributes cutting forces more evenly, reducing the risk of bit damage and keeping the drilling process moving efficiently even when rebar is encountered.

What is the actual usable drilling depth of the MDPL08712Q, and how does it differ from the overall length?

The MDPL08712Q has an overall length of 12 in., but the usable drilling depth is 10 in. The difference accounts for the SDS-plus shank engagement in the tool chuck, meaning 10 in. of that total length is available for effective material penetration.

How does the construction of this drill bit contribute to its durability and performance?

The bit body is constructed from a chromium-nickel-molybdenum steel alloy, which provides excellent hammering quality and extended service life. Combined with heat-treatment procedures and a shot-peened finish, the bit achieves increased surface hardness, improved resistance to bending forces, and reduced wear during high-demand drilling applications. Uniformly brazed carbide inserts further contribute to consistent, long-lasting performance.

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