The Diablo 27/32 in. x 16 in. x 21 in. Rebar Demon SDS-Max 4-Cutter Full Carbide Head Hammer Drill Bit is engineered for professionals who demand the highest level of performance when drilling through reinforced concrete, standard concrete, brick, block, and rebar. Diablo has designed this SDS-Max rotary hammer drill bit to outlast, outpace, and run cooler than conventional 2-cutter bits, making it the go-to choice for anchor setting and heavy-duty concrete drilling applications where rebar contact is unavoidable.

Key Features

• Up to 7X longer life versus standard 2-cutter hammer drill bits - means far fewer bit changes on the job, reducing downtime and replacement costs in demanding reinforced concrete applications.
• Dura-Carbide full carbide head with up to 2X more carbide - withstands up to 1800 deg. Fahrenheit of intense heat, whereas standard bits fail at just 800 deg. Fahrenheit, keeping the bit intact through repeated rebar strikes.
• 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 even through heavily reinforced concrete.
• Tri-Metal Fusion Welding - provides up to 3X stronger weld to keep the full carbide head intact during extreme impact such as rebar contact, preventing sudden bit failure and improving operator safety.
• Precision Tip design - delivers the stability and accuracy required for fast, precise holes, which is critical for anchor setting in reinforced concrete where hole placement must be exact.
• Optimized flute design - removes dust faster, keeping the carbide head cooler for ultimate strength and long-term durability, extending the usable life of the bit across high-volume drilling tasks.
• Wear mark indicator - ensures precise hole depth control so operators can achieve consistent, accurate results without guesswork.
• Optimized for maximum performance in corded and cordless SDS-Max rotary hammers - gives professionals flexibility to use the bit with the power tool platform they prefer on any job site.

Why This Product

• Designed specifically for rebar encounters - most standard hammer drill bits fail when they hit rebar. This bit's 4-cutter full carbide head is built to take controlled bites through rebar rather than breaking or deflecting, making it the right tool for reinforced concrete drilling.
• Heat resistance that protects the bit and the work - the ability to withstand up to 1800 deg. Fahrenheit means the carbide head stays strong during extended drilling sessions, reducing the risk of premature failure that costs time and money on large-scale projects.
• Reduced vibration for more comfortable, accurate drilling - the controlled carbide wear design minimizes the jarring feedback that fatigues operators, improving both hole quality and user comfort over long drilling sessions.
• Produced in Germany with Tri-Metal Fusion Welding - the robust bonding of the full carbide head resists the extreme forces generated by high-powered SDS-Max rotary hammers, making this bit a reliable choice for professional-grade concrete and masonry work.

Specifications

• Brand: Diablo
• Manufacturer Part Number: DMAMX1165
• Category: SDS-Max 4-Cutter
• Diameter: 27/32 in.
• Length: 21 in.
• Working Length: 16 in.
• Shank: SDS Max
• Head Type: Full Carbide Head
• Compatible Tools: SDS-Max Rotary Hammer Drill
• Materials: Reinforced Concrete; Concrete; Rebar; Brick/Block
• Pack Quantity: 1
• Country of Origin: Germany

Approved Applications

• Reinforced concrete and concrete

Frequently Asked Questions

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

The Rebar Demon uses a 4-cutter full carbide head produced with Tri-Metal Fusion Welding, which provides up to 3X stronger welding strength compared to standard bits. It also features Dura-Carbide with up to 2X more carbide material, allowing it to withstand up to 1800 deg. Fahrenheit of heat versus the 800 deg. Fahrenheit threshold where standard bits typically fail. The result is up to 7X longer life and far better performance when drilling through rebar-reinforced concrete.

Can this bit be used with cordless SDS-Max rotary hammers?

Yes. This bit is optimized for maximum performance in both corded and cordless SDS-Max rotary hammer drills, giving professionals the flexibility to use it with their preferred power tool platform on any job site.

What is the working length and total length of this bit?

The bit has a working length of 16 in. and a total overall length of 21 in., with a diameter of 27/32 in. This sizing is suited for deep anchor setting holes in thick reinforced concrete slabs and walls.

How does the optimized flute design contribute to longer bit life?

The optimized flute design removes dust and debris from the hole faster during drilling. By evacuating material more efficiently, the flutes help keep the carbide head cooler during operation. Lower cutting temperatures protect the carbide from heat-induced wear and cracking, directly contributing to the bit's extended service life in concrete and masonry drilling tasks.