The Simpson 3/4 in. x 8 in. SDS-Plus Quad Head Carbide Drill Bit is a premium, professional-grade rotary hammer bit engineered for demanding concrete and masonry drilling applications, including work in reinforced concrete. Manufactured to the highest industry standards, this bit combines a chromium-nickel-molybdenum steel alloy body with uniformly brazed carbide inserts and a proprietary Quad Head tip geometry to deliver faster drilling speeds, extended bit life, and reliable performance in tough conditions.

Key Features

• Uniformly Brazed Carbide Inserts - Precision brazing ensures consistent insert bonding throughout the bit's service life, translating to longer-lasting cutting performance and fewer bit replacements on the job.
• Centering Tip - Facilitates easy spot drilling so the bit starts on target without wandering, improving hole placement accuracy in concrete and masonry.
• Chromium-Nickel-Molybdenum Steel Alloy Body - This high-grade alloy composition ensures superior hammering quality and extended service life under the repeated impact forces of rotary hammer use.
• Heat-Treatment and Shot-Peened Finish - Increases surface hardness, improves drilling speed, reduces drill bit wear, and enhances resistance to bending forces, keeping the bit performing under heavy workloads.
• ANSI Standard B212.15 Compliance - Conforming to this recognized industry standard gives buyers confidence in consistent dimensional accuracy and verified performance from bit to bit.
• High-Volume, Multi-Flute Spiral - Quickly channels concrete dust away from the hole during drilling, maintaining a clear cutting path and sustaining faster drilling speeds throughout the operation.
• 4 x 90 deg. Quad Head Geometry - The four-point tip crushes through rebar and prevents the bit from sticking in reinforced concrete, keeping work moving without frustrating interruptions.
• SDS-Plus Shank - Compatible with SDS-plus rotary hammer tools and allows for secure, tool-free bit changes, reducing downtime between tasks.

Why This Product

• Built specifically for reinforced concrete - The 4 x 90 deg. Quad Head geometry is purpose-designed to crush through rebar rather than bind against it, making this bit a reliable choice for contractors working in reinforced concrete structures where standard bits commonly fail or seize.
• Professional-grade materials mean fewer replacements - The combination of a chromium-nickel-molybdenum steel alloy body, uniformly brazed carbide inserts, and a heat-treated, shot-peened finish works together to reduce wear and extend service life, lowering the cost per hole over time.
• Engineered for speed without sacrificing control - The high-volume, multi-flute spiral clears debris continuously while the centering tip holds position at the start of each hole, giving users both faster progress and more accurate results in concrete and masonry drilling.
• A complete, verified tool from a trusted brand - Manufactured to ANSI Standard B212.15 and built to precise tolerance requirements, this Simpson bit delivers the dimensional consistency and performance predictability that professional tradespeople depend on for critical anchoring and fastening applications.

Specifications

• Model Number (MPN): MDPL07508Q
• Shank Type: SDS-plus Shank
• Head Type: Quad Head 4x Drill Bit
• Diameter: 3/4 in.
• Overall Length: 8 in.
• Drilling Depth: 6 in.
• Material: Hardened Steel (Chromium-Nickel-Molybdenum Steel Alloy) with Carbide-Tipped Inserts
• Standard Compliance: ANSI Standard B212.15