The Diablo Rebar Demon 5/8 in. x 4 in. x 6 in. SDS-Plus 4-Cutter Full Carbide Head Hammer Drill Bit is engineered for professionals who demand maximum durability and speed when drilling through reinforced concrete, standard concrete, brick, and block. Designed with Diablo's proprietary Dura-Carbide technology and Tri-Metal Fusion Welding, this SDS-Plus bit delivers up to 7X longer service life compared to standard 2-cutter bits - making it an ideal choice for anchor setting and structural hole drilling in rebar-laden concrete. Made in Germany to exacting tolerances, the Rebar Demon is built to handle the brutal conditions of high-powered rotary hammer drilling where ordinary hammer drill bits quickly fail.

Key Features

• Up to 7X longer life versus standard 2-cutter hammer drill bits - dramatically reduces bit replacements and downtime on the job site
• Dura-Carbide formulation features up to 2X more carbide that withstands up to 1800 deg. Fahrenheit of intense heat - keeps the bit performing through rebar strikes where standard bits fail at just 800 deg. Fahrenheit
• Impact Resistant 4-Cutter Full Carbide Head extracts smaller bites of rebar for controlled, consistent carbide wear and reduced vibration - delivers fast, precise holes in reinforced concrete with less user fatigue
• Tri-Metal Fusion Welding features up to 3X stronger weld to keep the full carbide head intact during extreme impact such as rebar - prevents catastrophic head separation in the toughest drilling conditions
• Precision Tip delivers stability and accuracy required for fast, precise holes - ensures reliable anchor placement with clean, accurate bores
• Optimized flute design removes dust faster, keeping the carbide head cooler for ultimate strength and durability - extends bit life by reducing heat buildup during continuous use
• Wear mark indicator ensures precise hole making - helps operators achieve consistent hole depth without guesswork
• Optimized for maximum performance in corded and cordless SDS Plus or SDS Max rotary hammers - compatible with a wide range of professional hammer drill equipment

Why This Product

• When drilling into reinforced concrete where rebar contact is unavoidable, the 4-cutter full carbide head takes controlled, small bites of rebar rather than absorbing damaging blows - significantly reducing vibration and extending tool life in conditions that destroy conventional bits
• The Dura-Carbide head withstands up to 1800 deg. Fahrenheit - more than double the heat tolerance of standard bits - meaning it stays sharp and intact through the intense friction generated by high-powered hammer drilling in dense concrete
• Tri-Metal Fusion Welding creates a weld up to 3X stronger than standard construction, keeping the carbide head bonded even during extreme rebar impacts - giving crews confidence that the bit will not fail mid-hole in critical structural applications
• The optimized flute geometry actively clears dust and debris from the hole during drilling, which keeps the carbide head cooler and reduces the thermal stress that shortens bit life - a measurable advantage for crews drilling multiple anchor holes in sequence

Specifications

• Brand: Diablo
• Model Number: DMAPL4210
• Sub-Brand: Rebar Demon
• Category: SDS-Plus 4-Cutter
• Diameter: 5/8 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
• Compatible Materials: Reinforced Concrete; Concrete; Rebar; Brick/Block
• Pack Quantity: 1
• Country of Origin: Germany

Approved Applications

• Reinforced concrete and concrete

Frequently Asked Questions

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

The Rebar Demon uses a 4-cutter full carbide head instead of the 2-cutter design found on standard bits. This configuration takes smaller, more controlled bites of rebar during drilling, which results in consistent carbide wear, reduced vibration, and up to 7X longer service life compared to standard 2-cutter hammer drill bits. The Dura-Carbide material also withstands up to 1800 deg. Fahrenheit of heat, compared to approximately 800 deg. Fahrenheit for standard bits, meaning it holds up far longer under the intense friction of high-powered rotary hammer use.

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

Yes. The Rebar Demon SDS-Plus bit is optimized for maximum performance in both corded and cordless SDS Plus rotary hammers. The SDS-Plus shank design locks securely into any compatible rotary hammer chuck, whether the tool is corded or cordless.

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

Tri-Metal Fusion Welding is Diablo's manufacturing process used to bond the full carbide head to the bit body. It produces a weld up to 3X stronger than standard welding methods, which prevents the carbide head from separating or breaking away during extreme impact situations - such as direct rebar strikes. This means the bit stays intact and functional in the most demanding reinforced concrete drilling applications.

What does the wear mark indicator do?

The wear mark indicator is a visual reference built into the bit that helps operators ensure precise hole depth during drilling. It removes guesswork from the process and supports consistent, accurate hole making - especially important when setting anchors in reinforced concrete where exact embedment depth is required.