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Diablo SPEEDemon Red Granite Carbide Tipped Hammer Drill Bit for Concrete, Masonry and Stone – 5/16″ Diameter, 6″ Length, 4″ Working Length – DMARG1100 5/16″ x 6″ 1
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What people love (and don’t love)
What people love
Excellent performance and versatility, works well with both hammer drills and impact drivers.
Durable and long-lasting compared to other brands.
Delivers fast, clean drilling in concrete, brick, and masonry.
Great quality at a reasonable price.
Fits well with 1/4” chuck and railer bit holders.
Highly recommended by DIYers and professionals alike.
What people don’t love
Can be fragile; requires careful handling to avoid flexing and breaking.
May struggle with extremely hard concrete or certain foundation materials.
Some users experienced limited drilling depth before bit stopped.
Reliable and versatile drill bit with strong durability, though care is needed with harder materials.
The Diablo SPEEDemon Red Granite DMARG1100 is built for demanding drilling in concrete, masonry, and stone. With a carbide tip designed to handle impact and heat, it’s made to deliver long bit life and consistent results when you need clean holes without excessive slowdown.
You can view the current price and full details on Amazon here.
This 5/16″ diameter bit features an optimized U-flute design that removes dust faster to help keep the tip cooler during drilling. A hex shank helps improve stability and accuracy, supporting reliable performance across hammer or rotary drilling applications.
Optimized U-flute design removes dust faster to help keep the carbide tip cooler
Diablo-made carbide tip withstands impact and high-heat applications for longer life
Hex shank design helps increase shank stability, accuracy, and durability
Designed for concrete, masonry, and stone drilling with clean, aggressive starts
Compatible with hammer or rotary drilling applications
Specs at a glance: 5/16″ cutting diameter, 6″ overall length, 4″ working length, uncoated finish, 2 flutes, model DMARG1100. Sold as 1 piece.
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