The Diablo 1-1/8" x 31" x 36" Rebar Demon SDS-Max 4-Cutter Full Carbide Head Hammer Drill Bit is engineered for professionals who need maximum durability, speed, and precision when drilling through reinforced concrete, standard concrete, brick, and block. Designed to work with SDS-Max rotary hammer drills, this heavy-duty carbide head bit tackles the toughest anchor-setting jobs where rebar contact is unavoidable - delivering controlled, consistent performance even under extreme impact and heat conditions. Made in Germany to exacting standards, the Rebar Demon line represents Diablo's most complete and advanced approach to SDS-Max hammer drilling.

Key Features

• Up to 7X longer life versus standard 2-cutter hammer drill bits - dramatically reduces bit replacement frequency and downtime on the job site, lowering the total cost per hole drilled.
• Dura-Carbide composition with up to 2X more carbide withstands up to 1800 deg. Fahrenheit of intense heat - standard bits fail at 800 deg. Fahrenheit, making this bit the right choice for high-heat, high-stress reinforced concrete drilling.
• Impact Resistant 4-Cutter Full Carbide Head extracts smaller bites of rebar for controlled, consistent carbide wear and reduced vibration - delivers fast, precise holes while protecting the bit and the operator from harsh recoil.
• Tri-Metal Fusion Welding features up to 3X stronger weld to keep the full carbide head intact during extreme impact such as rebar - prevents head separation or breakage even in the most demanding reinforced concrete applications.
• Precision Tip delivers stability and accuracy required for fast, precise holes - ensures reliable anchor-setting performance without wandering or off-center starts in concrete.
• Optimized flute design removes dust faster, keeping the carbide head cooler for ultimate strength and durability - better dust evacuation means less heat buildup and a longer-lasting cutting edge across extended drilling sessions.
• Wear mark indicator ensures precise hole making - gives the operator a clear visual reference to achieve consistent, accurate hole depths every time.
• Optimized for maximum performance in corded and cordless SDS-Max rotary hammers - versatile compatibility means this bit integrates directly with your existing tool setup without adapters or modifications.

Why This Product

• For crews drilling anchor holes in reinforced concrete where rebar strikes are common, the 4-cutter full carbide head absorbs rebar impact in controlled increments rather than suffering sudden shock failure - making it the dependable choice when standard bits crack or degrade prematurely.
• The combination of Dura-Carbide heat resistance up to 1800 deg. Fahrenheit and an optimized flute design means the bit stays cooler and sharper longer during continuous use - reducing the need to stop, change bits, and lose productive time.
• At 36" overall length with a 31" working length and a 1-1/8" diameter, this bit reaches deep into thick reinforced concrete slabs and walls where shorter bits cannot - making it the right solution for anchor setting in heavy structural applications.
• Tri-Metal Fusion Welding and Dura-Carbide work together to address the two most common failure modes in hammer drill bits - heat degradation and impact fracture - giving professionals a bit that holds up through rebar contact without compromising hole quality or worker safety.

Specifications

• Brand: Diablo
• MPN: DMAMX1280
• Category: SDS-Max 4-Cutter
• Diameter: 1-1/8"
• Length: 36"
• Working Length: 31"
• Shank: SDS Max
• Head Type: Full Carbide Head
• Number of Cutters: 4
• 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 drilling for anchor setting and structural fastening

Frequently Asked Questions

What makes the Rebar Demon bit better than a standard 2-cutter hammer drill bit?

The Rebar Demon features a 4-cutter full carbide head made with Dura-Carbide - which includes up to 2X more carbide than standard bits - and Tri-Metal Fusion Welding for up to 3X stronger weld integrity. Together, these technologies deliver up to 7X longer life versus standard 2-cutter hammer drill bits, particularly in reinforced concrete where rebar contact is frequent.

Can this bit handle direct contact with rebar inside concrete?

Yes. The 4-cutter full carbide head is specifically designed to take small, controlled bites of rebar rather than sustaining a full shock strike. This approach results in consistent, controlled carbide wear, reduced vibration, and maintained hole accuracy even when the bit encounters embedded rebar during drilling.

What rotary hammers is this bit compatible with?

This bit is optimized for maximum performance in both corded and cordless SDS-Max rotary hammer drills. It uses an SDS Max shank and is not compatible with SDS-Plus tools without an adapter.

How does the Dura-Carbide heat resistance benefit real-world drilling performance?

Dura-Carbide is formulated to withstand up to 1800 deg. Fahrenheit of intense heat, whereas standard bits fail at 800 deg. Fahrenheit. Combined with the optimized flute design that removes dust faster to keep the carbide head cooler, this heat resistance allows the bit to maintain its cutting strength and structural integrity through extended, high-intensity drilling sessions in concrete and reinforced concrete.