The Diablo Rebar Demon 1 in. x 8 in. x 10 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, concrete, brick, and block. Built by Diablo with a full carbide head and proprietary Dura-Carbide material, this rotary hammer bit delivers up to 7X longer life compared to standard 2-cutter bits - making it a serious upgrade for anchor setting, heavy construction, and any application where rebar contact is unavoidable. Produced in Germany to exacting tolerances, the Rebar Demon sets a new standard for hammer drill performance in the most punishing job site conditions.

Key Features

• Up to 7X longer life versus standard 2-cutter hammer drill bits - dramatically reduces bit replacements and downtime on demanding reinforced concrete jobs.
• 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, keeping the bit functional even after repeated rebar strikes.
• Impact Resistant 4-Cutter Full Carbide Head - extracts smaller bites of rebar for controlled, consistent carbide wear and reduced vibration, so you get fast, precise holes with less fatigue and tool stress.
• Tri-Metal Fusion Welding with up to 3X stronger weld - keeps the full carbide head intact during extreme impact such as rebar contact, preventing breakage and protecting your tool investment.
• Precision Tip design - delivers the stability and accuracy required for fast, precise holes in reinforced concrete, which is critical for reliable anchor setting.
• Optimized flute design removes dust faster - keeps the carbide head cooler during operation for ultimate strength and durability over the life of the bit.
• Wear mark indicator - ensures precise hole depth making so you hit your target depth consistently without guesswork.
• Compatible with corded and cordless SDS-Plus rotary hammers - maximizes performance across a wide range of tool platforms so you are not locked into one specific setup.

Why This Product

• Professionals drilling into reinforced concrete face bit failure when rebar is hit unexpectedly - the 4-cutter full carbide head and Tri-Metal Fusion Welding are specifically engineered to absorb those impacts without shattering, giving you a bit that survives where standard bits break down.
• Standard 2-cutter hammer drill bits fail at heat levels around 800 deg. Fahrenheit - Diablo Dura-Carbide handles up to 1800 deg. Fahrenheit, meaning the Rebar Demon keeps cutting through high-friction situations that would destroy a conventional bit.
• The optimized flute design actively clears dust during drilling, reducing heat buildup at the tip - so the bit runs cooler, lasts longer, and maintains cutting accuracy through the life of each hole.
• With an 8 in. working length and 1 in. diameter, this bit is sized for anchor setting in thick reinforced concrete slabs and walls, where both hole depth and diameter precision directly affect structural fastening reliability.

Specifications

• Brand: Diablo
• Sub-Brand: Rebar Demon
• Model Number: DMAPL4300
• Diameter: 1 in.
• Length: 10 in.
• Working Length: 8 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 drilling for anchor setting and structural fastening

Frequently Asked Questions

Can this bit handle direct contact with rebar during drilling?

Yes. The Rebar Demon is specifically designed for reinforced concrete where rebar contact is expected. The 4-cutter full carbide head takes small, controlled bites of rebar rather than catching on it, which reduces vibration and delivers consistent carbide wear instead of sudden bit failure. Tri-Metal Fusion Welding adds up to 3X stronger bonding to keep the carbide head intact during high-impact rebar strikes.

What rotary hammers is this bit compatible with?

This bit uses an SDS-Plus shank and is optimized for maximum performance in both corded and cordless SDS-Plus rotary hammer drills. The shank design locks securely into SDS-Plus chucks and allows the hammer mechanism to function correctly for efficient concrete drilling.

How does the heat resistance of this bit compare to a standard hammer drill bit?

Standard hammer drill bits typically fail at around 800 deg. Fahrenheit. The Rebar Demon features Diablo Dura-Carbide with up to 2X more carbide material, allowing it to withstand up to 1800 deg. Fahrenheit of intense heat. This extended heat tolerance is especially important in high-friction drilling situations such as hitting rebar or drilling dense reinforced concrete where heat buildup is significant.

What does the wear mark indicator do?

The wear mark indicator is a reference point built into the bit that helps you monitor drilling depth and carbide wear during use. It ensures precise hole making so you can consistently drill to the correct depth - a critical requirement when setting anchors in reinforced concrete where hole depth directly affects anchor holding strength.