Diablo Hammer Drill Bit DMARG1130 3/8 Inch Diameter SPEEDemon (Carbide Tip 10 Inch Depth 12 Inch Length Hex Shank Concrete Granite Hole Boring)

Diablo DMARG1130 3/8-Inch x 10-Inch x 12-Inch SPEEDemon Red Granite Carbide Hammer Drill Bit

The Diablo DMARG1130 3/8-Inch x 10-Inch x 12-Inch SPEEDemon Red Granite Carbide-Tipped Hammer Drill Bit utilizes 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 Anchor & Threaded Rod Placement: Boring 3/8-inch diameter holes up to 10 inches deep for heavy wedge anchors, sleeve anchors, drop-in inserts, and drop-ceiling rod hangers in commercial concrete slabs.
• Natural Stone & Granite 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 3/8" x 10" x 12" SPEEDemon Red Granite Carbide-Tipped Hammer Drill Bit (DMARG1130)

Technical Specifications

Pro-Tip: When drilling deep 10-inch anchor holes in solid poured concrete, occasionally pulse the bit in and out of the borehole; clearing packed dust prevents flutes from binding and maintains maximum drilling speed.