The Diablo 1-3/8" x 31" x 36" Rebar Demon SDS-Max 4-Cutter Carbide-Tipped Hammer Drill Bit is an industrial-grade drilling solution engineered for contractors and tradespeople who need to bore fast, precise holes through reinforced concrete, standard concrete, brick, and block. Built by Diablo with purpose-driven innovations like Dura-Carbide technology, Tri-Metal Fusion Welding, and a 4-cutter carbide-tipped head, this SDS-Max bit is designed to outlast standard 2-cutter bits by up to 7 times - delivering unmatched performance in anchor-setting applications and heavy-duty rotary hammer work.

Key Features

• Up to 7X longer life versus standard 2-cutter hammer drill bits - dramatically reduces bit replacement frequency on demanding jobsites, lowering overall tooling costs.
• Diablo-made Dura-Carbide with up to 2X more carbide material - withstands up to 1800 deg. Fahrenheit of intense heat during rebar contact, compared to standard bits that fail at 800 deg. Fahrenheit, keeping the bit working where others quit.
• Impact Resistant 4-Cutter Carbide-Tipped Head - extracts smaller bites of rebar for controlled, consistent carbide wear and reduced vibration, allowing for fast, precise holes even through rebar-laden slabs.
• Tri-Metal Fusion Welding with up to 3X stronger weld - keeps the full carbide head intact during extreme impacts such as rebar strikes, preventing catastrophic head separation and extending usable bit life.
• Precision Tip design - delivers the stability and accuracy required for fast, precise holes in reinforced concrete, which is critical for reliable anchor setting applications.
• Optimized flute design removes dust faster - keeping the carbide head cooler for ultimate strength and durability over repeated use in concrete and masonry drilling.
• Wear mark indicator - ensures precise hole depth making so operators can consistently achieve accurate embedment depth without guesswork.
• Optimized for maximum performance in corded and cordless SDS-Max rotary hammers - providing versatility across a wide range of jobsite power tool setups.

Why This Product

• Contractors drilling through rebar-reinforced concrete face bit failure, excessive heat buildup, and vibration fatigue - the Rebar Demon's Dura-Carbide head tolerates up to 1800 deg. Fahrenheit and takes controlled bites of rebar rather than absorbing damaging impacts head-on, solving all three problems in a single bit.
• A 31" working length combined with a 36" overall length gives operators deep reach into thick concrete slabs and walls while maintaining the stability and accuracy needed for precise anchor-setting holes - reducing the need for extensions or secondary tools.
• The 4-cutter carbide head geometry paired with an optimized flute design removes debris faster and keeps the bit cooler, meaning fewer stops to clear holes and more productive drilling time on the job.
• Produced in Germany with Tri-Metal Fusion Welding, this bit is built to withstand the stress of high-powered SDS-Max rotary hammers - corded or cordless - making it a dependable single-bit solution for reinforced concrete, brick, and block drilling across multiple tool platforms.

Specifications

• Brand: Diablo
• Manufacturer Part Number: DMAMX1350
• Category: SDS-Max 4-Cutter
• Diameter: 1-3/8"
• Length: 36"
• Working Length: 31"
• 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 different from a standard hammer drill bit?

Standard 2-cutter hammer drill bits typically fail at temperatures around 800 deg. Fahrenheit and offer limited resistance to rebar impact. The Rebar Demon features Diablo's Dura-Carbide formula with up to 2X more carbide that withstands up to 1800 deg. Fahrenheit, a 4-cutter head that takes controlled bites of rebar to reduce vibration and carbide wear, and Tri-Metal Fusion Welding that creates a weld up to 3X stronger - combining to deliver up to 7X longer life versus standard 2-cutter bits.

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

This bit is designed for use with SDS-Max rotary hammer drills, both corded and cordless. It is optimized for maximum performance across compatible SDS-Max tool platforms and should not be used with SDS-Plus chucks or standard drill drivers.

What materials can this bit drill through?

This Rebar Demon bit is rated for reinforced concrete, standard concrete, rebar, brick, and block. It is specifically engineered to handle rebar encounters during concrete drilling without premature carbide failure, making it well suited for anchor-setting work in heavily reinforced slabs and walls.

What is the working length versus the overall length of this bit?

This bit has an overall length of 36" and a working length of 31". The working length refers to the fluted portion available for active drilling, while the overall length includes the SDS-Max shank. The wear mark indicator on the bit helps ensure precise hole depth is achieved consistently throughout the bit's service life.