The Diablo 9/16" x 31" x 36" Rebar Demon SDS-Max 4-Cutter Full Carbide Head Hammer Drill Bit is engineered for professionals who need to drill fast, accurate holes through reinforced concrete, standard concrete, brick, and block without losing time or bits to rebar strikes. Designed by Diablo and made in Germany, this heavy-duty SDS-Max rotary hammer bit uses a full carbide head construction and advanced heat resistance to outlast conventional 2-cutter drill bits by up to 7 times - making it a go-to solution for anchor setting, structural drilling, and demanding jobsite applications where rebar contact is unavoidable.

Key Features

• Up to 7X longer life versus standard 2-cutter hammer drill bits - dramatically reduces bit replacement frequency and keeps work moving on reinforced concrete projects.
• Diablo Dura-Carbide with up to 2X more carbide - withstands up to 1800 deg. Fahrenheit of intense heat compared to standard bits that fail at 800 deg. Fahrenheit, meaning the cutting head stays intact even after repeated rebar contact.
• Impact Resistant 4-Cutter Full Carbide Head - extracts smaller bites of rebar for controlled, consistent carbide wear and reduced vibration, delivering fast and precise holes through reinforced concrete without sacrificing bit integrity.
• Tri-Metal Fusion Welding with up to 3X stronger weld - keeps the full carbide head securely bonded during extreme impacts such as direct rebar hits, preventing dangerous head separation and bit failure.
• Precision Tip design - provides the stability and accuracy required for fast, precise hole placement, critical for anchor setting in reinforced concrete where positional accuracy matters.
• Optimized flute design removes dust faster - keeps the carbide head cooler during drilling for ultimate strength and long-term durability across extended drilling sessions.
• Wear mark indicator - ensures precise hole depth making so anchors seat correctly without over- or under-drilling.
• Optimized for corded and cordless SDS-Max rotary hammers - delivers maximum performance whether you are using a high-powered corded rotary hammer or a cordless SDS-Max tool on site.

Why This Product

• When drilling through reinforced concrete where rebar strikes are expected, most standard 2-cutter bits fail quickly or shatter under impact - the Rebar Demon 4-cutter full carbide head is specifically designed to take those hits and keep cutting, giving you up to 7X longer usable life per bit.
• The Dura-Carbide formulation handles heat up to 1800 deg. Fahrenheit - more than double the tolerance of standard bits - so the cutting head maintains its hardness and geometry even during the intense heat generated by rebar contact in high-powered hammer drilling.
• The 31" working length and 36" overall length make this bit suited for deep-penetration drilling in thick concrete slabs and masonry walls where shorter bits simply cannot reach anchor depth.
• Tri-Metal Fusion Welding ensures the full carbide head stays bonded under the extreme percussive stress of SDS-Max rotary hammers, reducing the risk of head loss and giving operators confidence when drilling in critical structural applications.

Specifications

• Brand: Diablo
• Model Number: DMAMX1080
• Category: SDS-Max 4-Cutter
• Diameter: 9/16"
• Length: 36"
• Working Length: 31"
• Shank: SDS Max
• Head Type: Full Carbide Head
• Number of Cutters: 4
• Compatible Tools: SDS-Max Rotary Hammer Drill
• Compatible Materials: Reinforced Concrete; Concrete; Rebar; Brick/Block
• Pack Quantity: 1
• Country of Origin: Germany

Approved Applications

• Reinforced concrete and concrete drilling

Frequently Asked Questions

What makes the Rebar Demon bit different from a standard 2-cutter SDS-Max bit?

The Rebar Demon features a 4-cutter full carbide head rather than the standard 2-cutter design. This configuration takes smaller bites of rebar during contact, producing controlled carbide wear, reduced vibration, and up to 7X longer life. The Dura-Carbide formulation also withstands up to 1800 deg. Fahrenheit of heat - more than double the 800 deg. Fahrenheit threshold where standard bits typically fail.

What is Tri-Metal Fusion Welding and why does it matter?

Tri-Metal Fusion Welding is the process Diablo uses to bond the full carbide head to the bit body, resulting in a weld that is up to 3X stronger than conventional welding methods. This extra strength keeps the carbide head intact during extreme impact situations - such as direct contact with embedded rebar - preventing head separation and bit failure during heavy drilling.

Will this bit work with a cordless SDS-Max rotary hammer?

Yes. The Rebar Demon SDS-Max bit is optimized for maximum performance in both corded and cordless SDS-Max rotary hammer drills. The full carbide head and optimized flute design ensure efficient dust removal and heat management regardless of the power source.

What does the wear mark indicator do?

The wear mark indicator is a visual reference built into the bit that allows the operator to monitor hole depth during drilling. This helps ensure precise hole depth for anchor setting in reinforced concrete, preventing under-drilling or over-drilling that could compromise anchor performance.