The Diablo Rebar Demon 1/4 in. x 6 in. SDS-Plus 4-Cutter Full Carbide Head Hammer Drill Bit is engineered for contractors and tradespeople who need to drill fast, precise holes in reinforced concrete without compromising bit life. Diablo built this hammer drill bit around a proprietary Dura-Carbide full carbide head and Tri-Metal Fusion Welding to handle the extreme heat and impact generated when boring through rebar-laden concrete - delivering results that standard 2-cutter bits simply cannot match. Whether you are setting anchors in structural concrete or working through brick and block, this SDS-Plus bit gives you the speed, durability, and control the job demands.

Key Features

• Up to 7X Longer Life vs. Standard 2-Cutter Bits - dramatically reduces bit replacement frequency and keeps projects moving without costly downtime.
• Dura-Carbide with Up to 2X More Carbide - withstands up to 1800 deg. Fahrenheit of intense heat versus standard bits that fail at 800 deg. Fahrenheit, so the cutting edge stays intact even after rebar strikes.
• Impact Resistant 4-Cutter Full Carbide Head - extracts smaller bites of rebar for controlled, consistent carbide wear and reduced vibration, producing fast and precise holes in reinforced concrete.
• Tri-Metal Fusion Welding with Up to 3X Stronger Weld - keeps the full carbide head intact during extreme impact such as rebar, preventing head loss and extending safe working life.
• Precision Tip - delivers the stability and accuracy required for fast, precise holes, reducing wandering and improving anchor-setting accuracy.
• Optimized Flute Design - removes dust faster, keeping the carbide head cooler for ultimate strength and durability across long drilling sessions.
• Wear Mark Indicator - ensures precise hole making by clearly showing the operator when the correct depth has been reached.
• Compatible with Corded and Cordless SDS-Plus Rotary Hammers - offers maximum flexibility across jobsite tool inventories without adapter requirements.

Why This Product

• Rebar encounters that destroy standard bits are handled by the 4-cutter full carbide head, which takes small controlled bites rather than absorbing the full shock - this is why the bit lasts up to 7X longer in reinforced concrete applications.
• The Dura-Carbide formulation tolerates up to 1800 deg. Fahrenheit of heat, meaning it stays functional in conditions that would cause a standard bit to fail at 800 deg. Fahrenheit - critical when drilling deep or repeated holes without stopping to cool the bit.
• Tri-Metal Fusion Welding bonds the carbide head with up to 3X the weld strength of conventional methods, so the head stays attached under the repeated percussion loads of a high-powered rotary hammer.
• The optimized flute geometry actively clears dust out of the hole, which keeps the cutting zone cooler and maintains drilling speed - reducing operator effort and total time per hole in concrete and brick applications.

Specifications

• Brand: Diablo
• Sub-Brand: Rebar Demon
• Category: SDS-Plus 4-Cutter
• Diameter: 1/4 in.
• Length: 6 in.
• Working Length: 4 in.
• Shank: SDS-Plus
• Head Type: Full Carbide Head
• Number of Cutters: 4
• Compatible Tools: SDS-Plus Rotary Hammer Drill
• Materials: Reinforced Concrete, Concrete, Rebar, Brick/Block
• Country of Origin: United States

Available Pack Options

• DMAPL4070: 1 Ea
• DMAPL4070-P25: 25 Pk

Approved Applications

• Reinforced concrete and concrete drilling, including anchor setting in rebar-laden structural slabs and walls

Frequently Asked Questions

How does the Rebar Demon handle direct contact with rebar?

The 4-cutter full carbide head is specifically engineered to take smaller, controlled bites when it encounters rebar rather than absorbing the full impact in a single point. This reduces vibration and delivers controlled, consistent carbide wear, which is a key reason the bit achieves up to 7X longer life compared to standard 2-cutter hammer drill bits.

What makes the carbide head bond stronger than standard bits?

Diablo uses Tri-Metal Fusion Welding, which produces a weld that is up to 3X stronger than conventional methods. This keeps the full carbide head securely attached during extreme impact situations - such as repeated rebar strikes - preventing premature head separation and extending the usable life of the bit.

Can this bit be used with cordless rotary hammers?

Yes. This bit is optimized for maximum performance in both corded and cordless SDS-Plus rotary hammer drills, making it a flexible choice for jobsites where cordless tools are preferred or required.

What is the purpose of the wear mark indicator on this bit?

The wear mark indicator is a visual reference built into the bit that helps the operator confirm when the correct hole depth has been reached during drilling. This supports precise hole making, which is especially important for anchor-setting applications in reinforced concrete where depth accuracy is critical.