The Simpson 7/8 in. x 18 in. SDS-Plus Quad Head Carbide Drill Bit is a professional-grade rotary hammer bit engineered for demanding concrete and masonry drilling applications, including work in reinforced concrete where rebar contact is unavoidable. Built to precise tolerance requirements and conforming to ANSI Standard B212.15, this bit delivers consistent, high-speed performance in structural and heavy-duty drilling tasks where accuracy and durability are critical.

Key Features

• Uniformly Brazed Carbide Inserts - Precision brazing of carbide inserts across the head ensures consistent contact and even wear, translating directly into longer bit life and fewer replacements on the job.
• Centering Tip for Spot Drilling - Most bits in this line include a centering tip that lets users accurately locate the drilling point immediately, eliminating walking or skipping and saving setup time.
• Chromium-Nickel-Molybdenum Steel Alloy Body - This high-grade alloy is specifically selected for its superior hammering quality, giving the bit the structural integrity needed to handle continuous rotary hammer use without premature fatigue.
• Heat-Treated and Shot-Peened Finish - Proprietary heat-treatment procedures and a shot-peened surface finish increase surface hardness, improve drilling speed, reduce drill bit wear, and improve resistance to bending forces, extending the working life of the bit under heavy loads.
• ANSI Standard B212.15 Compliance - Conformance to this industry standard ensures dimensional accuracy and guaranteed compatibility with SDS-Plus rotary hammer systems across brands.
• High-Volume Multi-Flute Spiral - The multi-flute spiral design quickly channels concrete dust out of the hole during drilling, reducing friction and maintaining faster, cleaner penetration rates.
• 4 x 90 deg. Quad Head Geometry - The four-point tip design crushes through rebar and prevents the bit from sticking or binding in reinforced concrete, keeping work moving in the toughest structural applications.

Why This Product

• Built for Reinforced Concrete - The 4 x 90 deg. Quad Head tip geometry is specifically engineered to power through rebar without sticking, making this bit a reliable choice for structural drilling where standard bits struggle or bind.
• Engineered for Extended Service Life - The combination of uniformly brazed carbide inserts, a chromium-nickel-molybdenum alloy body, and a heat-treated shot-peened finish means this bit is built to outperform and outlast standard carbide drill bits across high-cycle professional use.
• Faster, Cleaner Drilling - The high-volume multi-flute spiral actively removes concrete dust from the hole as you drill, reducing heat buildup and maintaining speed throughout the full 16 in. drilling depth without repeated bit withdrawal.
• Professional Precision You Can Depend On - Manufactured to ANSI Standard B212.15 and built to precise tolerance requirements, this bit fits securely in any SDS-Plus rotary hammer and delivers repeatable, accurate results whether spot drilling or driving to full depth.

Specifications

• Specification: Detail
• Model Number (MPN): MDPL08718Q
• Diameter: 7/8 in.
• Overall Length: 18 in.
• Drilling Depth: 16 in.
• Shank Type: SDS-Plus Shank
• Head Type: Quad Head 4x Drill Bit
• Material: Hardened Steel (Chromium-Nickel-Molybdenum Steel Alloy Body)
• Tip Material: Carbide (Uniformly Brazed)
• Standards Compliance: ANSI Standard B212.15
• Country of Origin: Germany

Approved Applications

The Simpson MDPL08718Q SDS-Plus Quad-Head drill bit is engine