Diablo Hammer Drill Bit DMARG1070 1/4 x 6 Inch SPEEDemon Red Granite (Hex Shank Carbide Tipped Concrete Stone Marble Masonry Drilling)

Diablo DMARG1070 SPEEDemon 1/4-Inch x 6-Inch Red Granite PLUS Carbide Hammer Drill Bit

The Diablo DMARG1070 is a 1/4-inch diameter by 6-inch overall length SPEEDemon Red Granite PLUS hammer drill bit engineered with a 4-inch working length and an Impact Strong hex shank for drilling deep anchor holes into natural stone and masonry. Manufactured with an impact-resistant carbide tip subjected to a heat-hardening brazing process, this Swiss-made bit delivers 4 times longer service life than standard masonry bits in dense concrete, marble, and granite. Featuring a self-centering Grip Point Tip PLUS profile that eliminates bit walking alongside an optimized U-flute geometry that evacuates stone dust rapidly, this high-efficiency bit prevents thermal head degradation in cordless impact drivers and hammer drills.

Best Used For:

• Hard Natural Stone & Granite Drilling: Boring clean 1/4-inch anchor and passage holes into solid granite countertops, exterior stone veneers, and marble slabs without material fracture.
• Poured Concrete & Masonry Fastening: Drilling pilot holes in cured concrete foundation walls, structural brick, and cinder block for masonry screws and anchors.
• Cordless Impact Driver Field Work: Executing high-speed stone and concrete drilling using 18V/20V cordless impact drivers while minimizing battery current draw.

Key Performance & Safety Features

• 4X Extended Life Carbide Matrix: High-impact carbide tooth geometry resists severe friction heat and mechanical shock when penetrating hard stone.
• Grip Point Tip PLUS Precision Centering: Multi-ground tip spur locks into smooth tile, granite, and masonry surfaces to ensure pinpoint start accuracy.
• Fast-Evacuation U-Flute Architecture: Wide debris channels clear abrasive stone dust quickly to reduce friction buildup and preserve carbide hardness.
• Impact Strong Hex Shank Base: Engineered hex drive base prevents shank slippage and absorbs high-torque percussion spikes in impact drivers.
• Optimized Cordless Battery Runtime: Low-friction cutting geometry lowers drill motor power draw to deliver more holes per battery charge.
• Multi-Material Substrate Versatility: Drills efficiently through reinforced concrete, masonry block, brick, marble, and red granite.

What's Included

• (1) Diablo 1/4" x 4" x 6" SPEEDemon™ Red Granite Carbide Tipped Hammer Drill Bit (DMARG1070)

Technical Specifications

Pro-Tip: Use high percussion speed with light manual force when drilling polished granite or marble to allow the Grip Point Tip to grind smoothly without cracking the stone surface.