The Diablo Rebar Demon 3/4 in. x 8 in. x 10 in. SDS-Plus 4-Cutter Full Carbide Head Hammer Drill Bit is engineered for professionals who need maximum durability and drilling speed in reinforced concrete, concrete, brick, and block. Featuring Diablo's proprietary Dura-Carbide formulation and an impact-resistant 4-cutter full carbide head, this SDS-Plus bit is purpose-built to survive rebar strikes that destroy standard 2-cutter bits - delivering faster hole drilling, less vibration, and dramatically longer tool life in the most demanding jobsite conditions.

Key Features

• Up to 7X Longer Life vs. Standard 2-Cutter Bits - spend less time changing bits and more time working, even in rebar-heavy reinforced concrete applications
• 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, so the cutting head stays intact when it contacts rebar
• Impact-Resistant 4-Cutter Full Carbide Head - extracts smaller bites of rebar for controlled, consistent carbide wear and reduced vibration, delivering fast, precise holes without jarring the operator
• Tri-Metal Fusion Welding with Up to 3X Stronger Weld - keeps the full carbide head securely bonded during extreme impacts such as rebar contact, preventing head loss or breakage that can ruin a bit instantly
• Precision Tip Design - delivers the stability and accuracy required for fast, precise holes in reinforced concrete, which is critical for accurate anchor setting
• Optimized Flute Design - removes dust faster and keeps the carbide head cooler for ultimate strength and durability throughout the life of the bit
• Wear Mark Indicator - provides a clear visual reference to ensure precise hole depth, eliminating guesswork when setting anchors
• Compatible with Corded and Cordless SDS-Plus Rotary Hammers - optimized for maximum performance whether used with a corded or cordless SDS-Plus rotary hammer drill

Why This Product

• Standard hammer drill bits fail when they contact rebar - the Rebar Demon is specifically designed to handle rebar strikes, taking small controlled bites rather than shattering or stalling, making it the right choice for reinforced concrete drilling
• The full carbide head construction combined with Tri-Metal Fusion Welding resists heat up to 1800 deg. Fahrenheit, meaning the bit maintains cutting performance in situations where conventional bits would break down and require replacement
• The optimized flute design actively clears dust from the hole during drilling, keeping the carbide cooler and reducing the risk of bit seizure in deep holes in concrete or block
• A wear mark indicator takes the guesswork out of anchor hole depth, providing the consistency required for proper anchor setting in structural reinforced concrete work

Specifications

• Brand: Diablo
• Sub-Brand: Rebar Demon
• Model Number: DMAPL4250
• Category: SDS-Plus 4-Cutter
• Diameter: 3/4 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

Frequently Asked Questions

What makes this bit different from a standard 2-cutter SDS-Plus hammer drill bit?

The Rebar Demon uses a 4-cutter full carbide head and Diablo's Dura-Carbide formulation with up to 2X more carbide material. This allows it to withstand up to 1800 deg. Fahrenheit of heat - more than double the 800 deg. Fahrenheit threshold where standard bits fail. The result is up to 7X longer life and the ability to continue drilling through rebar rather than breaking down upon contact.

Can I use this bit with a cordless SDS-Plus rotary hammer?

Yes. The Rebar Demon SDS-Plus bit is optimized for maximum performance in both corded and cordless SDS-Plus rotary hammer drills.

What is the working length of this bit and why does it matter?

This bit has a working length of 8 in. with an overall length of 10 in. The working length determines the maximum usable drilling depth, which is important when boring holes in thick concrete or when anchor embedment depth requirements must be met. The wear mark indicator on the bit helps confirm precise hole depth during use.

What materials can this hammer drill bit drill through?

This bit is designed for use in reinforced concrete, concrete, rebar, and brick/block. The 4-cutter full carbide head and Tri-Metal Fusion Welding make it especially effective in reinforced concrete where rebar contact is likely.