Diablo Hammer Drill Bit DMARG1110 5/16 Inch Diameter SPEEDemon (Carbide Tip 8 Inch Depth 10 Inch Length Hex Shank Concrete Granite Hole Boring)

Diablo DMARG1110 5/16-Inch x 8-Inch x 10-Inch SPEEDemon Red Granite Carbide Hammer Drill Bit

The Diablo DMARG1110 5/16-Inch x 8-Inch x 10-Inch SPEEDemon Red Granite Carbide-Tipped Hammer Drill Bit features high-density tungsten carbide cutting geometry and a self-centering Grip Point Tip PLUS point to drill deep, wandering-free anchor holes through hard masonry surfaces. Engineered with an aggressive multi-ground head and an optimized U-flute profile, this impact-rated boring accessory evacuates abrasive dust rapidly to minimize thermal breakdown and extend cutter life up to 4X longer than standard masonry bits. Built with an Impact Strong hex shank that eliminates spinout in standard 3-jaw hammer drill chucks and 1/4-inch hex impact drivers, it equips electrical contractors, masonry specialists, and commercial installers with high-speed penetration across cured concrete, structural brick, natural granite, and architectural stone.

Best Used For:

• Concrete Screw & Tapcon Fastener Anchor Boring: Drilling 5/16-inch diameter holes up to 8 inches deep for heavy-duty concrete screws, drop-in anchors, and conduit brackets in commercial foundation walls.
• Granite & Natural Stone Cladding Installation: Penetrating dense red granite, marble tiles, and natural stone facades without bit wandering or surface blowout.
• Electrical & Plumbing Conduit Fastening: Creating clean, straight holes through poured concrete, CMU masonry blocks, and brick structures for mounting utility hardware.

Key Performance & Safety Features

• Diablo Premium Carbide Tip: High-performance brazing and hardening process withstands extreme percussion impact and friction heat, extending bit life up to 4X.
• Grip Point Tip PLUS Geometry: Multi-ground self-centering point ensures immediate engagement on smooth stone and dense concrete without skating.
• Optimized U-Flute Dust Removal: Wide spiral flutes eject hot masonry debris rapidly away from the cutting zone, keeping the tip cooler during continuous deep drilling.
• Impact Strong Hex Shank: Heavy-duty shank design prevents bit spinning in keyed or keyless drill chucks and provides seamless compatibility with cordless impact drivers.
• Multi-Mode Tool Compatibility: Engineered for maximum performance in both rotary-hammer percussive mode and standard rotary-only drilling tools.

What's Included

• (1) Diablo 5/16" x 8" x 10" SPEEDemon Red Granite Carbide-Tipped Hammer Drill Bit (DMARG1110)

Technical Specifications

Pro-Tip: When drilling deep 8-inch holes in hard granite or cured concrete, pulse the drill periodically to pull accumulated debris up the U-flutes; clearing abrasive dust prevents overheating and preserves the Grip Point Tip PLUS cutting edge.