Description

The FREUD DMARG1120 is a carbide tipped hammer drill bit from the Speed Demon red granite range, designed for fast, accurate hole drilling in concrete, masonry, and stone. The bit measures 3/8 inches in diameter with a 4 inch working length and 6 inch overall length. A multi-ground grip point tip geometry enables aggressive bit starts and produces clean holes with minimal walking. The carbide tip is bonded through a proprietary brazing and hardening process that extends service life under sustained impact loads. This bit is built impact strong for increased shank stability in both cordless and corded hammer drills and impact drivers. Licensed contractors and trade pros working with masonry substrates will find this a reliable daily-use drilling solution.

The DMARG1120 is suited for residential and commercial applications where hammer drilling into concrete, block, brick, or stone is required. Typical use cases include anchor setting, conduit penetrations, plumbing rough-ins through foundation walls, and structural fastener holes. The impact-rated shank design supports use in high-cycle conditions common on commercial job sites. This bit ships in a package quantity of 5, making it practical for stocking service vehicles or tool cribs. Its compatibility with both corded rotary hammer drills and cordless combination drivers gives installers flexibility across tool inventories.

Key Features

Red granite carbide tip bonded with a specialized brazing and hardening process for extended wear life
Multi-ground grip point tip design for aggressive starts and clean, fast holes without walking
Impact-rated shank construction for increased stability and durability under cordless and corded impact loads
3/8 inch diameter x 4 inch working length x 6 inch overall length suits common anchor and penetration work
Package quantity of 5 supports fleet stocking and high-volume drilling tasks
Compatible with concrete, masonry, and stone substrates

Compatibility

Designed for use in cordless and corded rotary hammer drills and impact drivers. Suited for drilling into concrete, masonry, brick, block, and stone. No specific tool model compatibility was provided by the manufacturer in the available product data.

Installation Notes

Hammer drill bits of this type are installed and operated by licensed contractors, electricians, plumbers, and HVAC technicians performing masonry penetrations. Before drilling, confirm the substrate is free of embedded conduit, rebar, or utility lines using a scanner or locating tool. Secure the bit fully in the chuck before operation and verify the drill is set to hammer mode for masonry applications. Wear appropriate eye and respiratory protection when drilling concrete or masonry, as required by applicable job site safety codes.