The Diablo 1 1/2" x 24" x 29" Rebar Demon SDS-Max 4-Cutter Carbide-Tipped Hammer Drill Bit represents a breakthrough in heavy-duty concrete drilling performance. Engineered by Diablo for professionals who routinely encounter reinforced concrete, rebar, brick, and block, this SDS-Max bit delivers up to 7X longer working life compared to standard 2-cutter hammer drill bits - making it the right tool for anchor setting, structural drilling, and demanding jobsite conditions where downtime and bit failure are not an option.

Key Features

• Up to 7X Longer Life vs. Standard 2-Cutter Bits - dramatically reduces bit replacement frequency and keeps drilling operations moving without costly interruptions on reinforced concrete jobsites.
• Diablo Dura-Carbide with Up to 2X More Carbide Material - withstands up to 1800 deg. Fahrenheit of intense heat versus standard bits that fail at 800 deg. Fahrenheit, giving this bit a decisive edge when hitting rebar repeatedly in high-temperature drilling conditions.
• 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 slabs and walls.
• Tri-Metal Fusion Welding with Up to 3X Stronger Weld - keeps the full carbide head intact during extreme rebar impacts, preventing catastrophic head separation and ensuring safe, reliable operation in tough applications.
• Precision Tip Design - delivers the stability and accuracy required for fast, precise holes in reinforced concrete for anchor setting, eliminating bit walk and improving placement accuracy from the first strike.
• Optimized Flute Design for Faster Dust Removal - evacuates debris rapidly to keep the carbide head cooler for ultimate strength and durability, extending bit life and maintaining consistent drilling speed throughout the hole.
• Wear Mark Indicator - ensures precise hole making by clearly showing the operator when the bit has reached the correct drilling depth, reducing the risk of over-drilling in anchor setting applications.
• Compatible with Corded and Cordless SDS-Max Rotary Hammers - optimized for maximum performance across a wide range of professional-grade rotary hammer tools, giving crews flexibility on the jobsite.

Why This Product

• For contractors drilling into reinforced concrete where rebar strikes are unavoidable, the 4-cutter full carbide head absorbs rebar impacts with controlled wear rather than catastrophic failure - meaning fewer broken bits and less downtime mid-job.
• The ability to withstand up to 1800 deg. Fahrenheit of heat - more than double the threshold of standard bits - means this bit stays functional through extended high-intensity drilling sessions where conventional bits would soften, distort, or break.
• At a 1 1/2" diameter with a 24" working length and 29" overall length, this bit is purpose-sized for deep anchor bolt holes, through-slab penetrations, and large-diameter reinforced concrete drilling tasks that demand both reach and cutting capacity.
• Tri-Metal Fusion Welding and Dura-Carbide technology work together to address the two most common failure points of standard bits - head separation and carbide degradation from heat - making this bit a more reliable long-term investment for professional drilling crews.

Specifications

• Brand: Diablo
• Manufacturer Part Number: DMAMX1370
• Category: SDS-Max 4-Cutter
• Diameter: 1 1/2"
• Overall Length: 29"
• Working Length: 24"
• Shank: SDS-Max
• Head Type: Carbide-Tipped
• 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 for anchor setting and structural penetrations

Frequently Asked Questions

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

The Rebar Demon features a 4-cutter full carbide head made with Diablo Dura-Carbide, which includes up to 2X more carbide material than standard bits. This allows it to withstand up to 1800 deg. Fahrenheit of heat - more than twice the 800 deg. Fahrenheit threshold where standard bits fail. The result is up to 7X longer working life, reduced vibration, and controlled carbide wear even when the bit strikes rebar during drilling.

What type of rotary hammer is required to use this bit?

This bit requires an SDS-Max rotary hammer drill. It is optimized for maximum performance in both corded and cordless SDS-Max rotary hammers, giving professional crews flexibility in tool selection on the jobsite.

What materials can this hammer drill bit be used on?

This bit is designed for use in reinforced concrete, concrete, rebar, and brick/block. Its 4-cutter full carbide head and Precision Tip are specifically engineered to handle the stress of drilling through rebar-embedded concrete without compromising accuracy or speed.

What do the overall length and working length measurements mean for my application?

The overall length of 29" refers to the total end-to-end measurement of the bit including the SDS-Max shank. The working length of 24" is the usable drilling depth the bit can achieve once seated in the chuck of the rotary hammer. This makes the bit well-suited for deep anchor bolt holes and through-slab penetrations that require significant reach into reinforced concrete.