Freud DMARG1090 Hammer Drill Bit Concrete Masonry Stone

Product Description

The FREUD DMARG1090 is a carbide-tipped hammer drill bit engineered for drilling into concrete, masonry, and stone. Measuring 0.25 inches in diameter with a 10-inch working length and 12-inch overall length, this bit is built for both cordless and corded hammer drills and impact drivers. The carbide tip is processed through a specialized brazing and hardening treatment that extends service life and maintains drilling accuracy under sustained use. A multi-ground grip point tip geometry allows for aggressive bit starts, producing clean, fast holes with minimal wandering. At 0.55 pounds, the bit is sized for repeated use on demanding masonry applications in residential and commercial jobsite environments.

This bit is suited for trades professionals who regularly drill anchor holes, conduit penetrations, or fastener openings in poured concrete slabs, concrete block, brick, and natural stone. It performs in both rotary hammer mode and standard hammer drill mode, making it compatible with a wide range of cordless and corded tool platforms. The impact-strong shank design resists flex and breakage under the high-cycle loading typical of SDS-plus and standard round-shank hammer drills. Typical users include electricians, plumbers, HVAC installers, and concrete contractors who require consistent hole size and depth on high-volume drilling tasks.

Key Features

• Carbide tip processed with a specialized brazing and hardening method for extended wear life
• Multi-ground grip point tip for aggressive starts and clean, accurate holes in masonry and stone
• Impact-strong shank design provides stability and durability in cordless and corded drill drivers
• 0.25-inch diameter with 10-inch working length and 12-inch overall length for deep-reach applications
• Compatible with concrete, masonry, brick, and natural stone substrates

Compatibility

Designed as an OEM-style replacement or direct-use hammer drill bit for standard round-shank cordless and corded hammer drills and impact drivers used in concrete, masonry, and stone drilling applications.

Installation Notes

Installation should be performed by a qualified tradesperson familiar with hammer drill operation and masonry drilling procedures. Confirm the tool chuck is fully secured before beginning drilling and verify the drill is set to hammer mode for masonry substrates. Eye protection and dust control measures should be used in accordance with applicable jobsite safety codes. Do not use this bit in rotary-only mode on hard concrete or stone, as this will accelerate tip wear and may cause bit failure.