The Diablo 1-1/4" x 47" x 52" Rebar Demon SDS-Max 4-Cutter Full Carbide Head Hammer Drill Bit is an engineered solution for professionals who drill through reinforced concrete, rebar, brick, and block on a daily basis. Designed by Diablo and produced in Germany, this heavy-duty SDS-Max bit delivers exceptional durability, speed, and heat resistance that standard 2-cutter bits simply cannot match. Whether you are setting anchors in reinforced slabs or boring through dense masonry, the Rebar Demon gives you the control, precision, and longevity demanded by high-output rotary hammer work.

Key Features

• Up to 7X longer life versus standard 2-cutter hammer drill bits - dramatically reduces bit replacement frequency and downtime on large concrete drilling projects
• Diablo Dura-Carbide with up to 2X more carbide material - withstands up to 1800 deg. Fahrenheit of intense heat where standard bits fail at 800 deg. Fahrenheit, keeping the cutting head functional even 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, precise holes while protecting both the bit and the operator from harsh impact forces
• Tri-Metal Fusion Welding features up to 3X stronger weld - keeps the full carbide head intact during extreme impact such as rebar contact, preventing catastrophic head separation under stress
• Precision Tip delivers stability and accuracy required for fast, precise holes - critical for reliable anchor setting in reinforced concrete applications
• Optimized flute design removes dust faster, keeping the carbide head cooler for ultimate strength and durability - reducing heat buildup that shortens bit life during continuous use
• Wear mark indicator ensures precise hole making - allows the operator to confirm hole depth without stopping to measure, improving workflow efficiency
• Optimized for maximum performance in corded and cordless SDS-Max rotary hammers - versatile compatibility across jobsite power sources without sacrificing drilling speed or bit integrity

Why This Product

• Professionals drilling through reinforced concrete face rapid bit wear and dangerous bit failure when rebar is encountered - the 4-cutter full carbide head and Tri-Metal Fusion Welding address both problems directly, delivering up to 7X more bit life and a head that stays intact under rebar impact
• Heat is the primary enemy of carbide drill bits in sustained hammer drilling - Dura-Carbide with up to 2X more carbide material and an optimized flute design that clears debris quickly combine to keep this bit cutting at temperatures where standard bits have already failed
• At a 52-inch total length with a 47-inch working length, this bit reaches deep structural concrete applications - including anchor setting in thick reinforced slabs - where shorter bits cannot reach
• The SDS-Max shank and 4-cutter geometry make this bit compatible with high-powered corded and cordless rotary hammer drills, giving crews flexibility in tool selection without compromising hole quality or drilling speed in concrete, rebar, brick, or block

Specifications

• Brand: Diablo
• Manufacturer Part Number: DMAMX1325
• Diameter: 1-1/4"
• Length: 52"
• Working Length: 47"
• 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, including anchor setting in rebar-laden structural slabs

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 instead of the standard 2-cutter design. This allows the bit to take smaller, more controlled bites of rebar, which produces consistent carbide wear and reduced vibration. Combined with Dura-Carbide that withstands up to 1800 deg. Fahrenheit versus the 800 deg. Fahrenheit threshold where standard bits fail, the result is up to 7X longer bit life in reinforced concrete applications.

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

Tri-Metal Fusion Welding is the process Diablo uses to attach the full carbide head to the bit body. It produces a weld that is up to 3X stronger than those found on conventional bits. This added strength keeps the carbide head from separating or cracking when the bit strikes rebar at high impact forces - a critical safety and performance advantage in reinforced concrete work.

Is this bit compatible with cordless SDS-Max rotary hammers?

Yes. The Rebar Demon SDS-Max 4-cutter bit is optimized for maximum performance in both corded and cordless SDS-Max rotary hammer drills, giving you flexibility across different jobsite power setups without sacrificing drilling speed or hole quality.

What does the wear mark indicator do?

The wear mark indicator is a visual reference built into the bit that lets you confirm precise hole depth during drilling. This means you can monitor depth without stopping work to measure manually, which is especially useful during anchor setting in reinforced concrete where consistent hole depth is essential for proper fastener performance.