The Diablo 11/16" x 8" x 13" Rebar Demon SDS-Max 4-Cutter Full Carbide Head Hammer Drill Bit is engineered for professionals who need maximum durability, speed, and precision when drilling through reinforced concrete, concrete, brick, and block. Built with a full carbide head and an impact-resistant 4-cutter design, this Diablo hammer drill bit is purpose-built to outlast standard 2-cutter bits and keep performing even when hitting rebar - delivering controlled wear, reduced vibration, and hole accuracy that anchor-setting applications demand.

Key Features

• Up to 7X longer life versus standard 2-cutter hammer drill bits - fewer bit changes mean less downtime and lower cost per hole on demanding jobsites
• Diablo Dura-Carbide features up to 2X more carbide that withstands up to 1800 deg. Fahrenheit of intense heat to combat rebar hits - standard bits fail at 800 deg. Fahrenheit, meaning this bit keeps cutting where others give out
• Impact Resistant 4-Cutter Full Carbide Head extracts smaller bites of rebar for controlled, consistent carbide wear and reduced vibration - delivering fast, precise holes even in heavily reinforced concrete
• Tri-Metal Fusion Welding features up to 3X stronger weld to keep the full carbide head intact during extreme impact such as rebar - preventing head loss and catastrophic bit failure mid-task
• Precision Tip delivers stability and accuracy required for fast, precise holes - critical for anchor setting where hole placement and diameter tolerance matter
• Optimized flute design removes dust faster, keeping the carbide head cooler for ultimate strength and durability - prolonging bit life and maintaining cutting performance over extended use
• Wear mark indicator ensures precise hole making - giving the operator a reliable depth reference without needing a separate depth stop
• Optimized for maximum performance in corded and cordless SDS Max rotary hammers - compatible with a wide range of professional-grade tool platforms

Why This Product

• When drilling through reinforced concrete where rebar strikes are unavoidable, the 4-cutter full carbide head takes small controlled bites rather than absorbing full-force impacts - protecting the bit and keeping your work on schedule
• The ability to withstand up to 1800 deg. Fahrenheit compared to the 800 deg. Fahrenheit threshold of standard bits means this bit survives the heat generated by high-powered SDS-Max rotary hammers in continuous use - making it the right choice for heavy production drilling
• The 11/16" diameter with an 8" working length in a 13" overall format is sized for anchor-setting applications in reinforced concrete slabs, walls, and footings where both reach and precision are required
• Produced in Germany to tight manufacturing tolerances, the Tri-Metal Fusion Welding process delivers a weld strength up to 3X greater than standard methods - reducing the risk of head separation during the most demanding impact conditions

Specifications

• Brand: Diablo
• Model Number: DMAMX1420
• Category: SDS-Max 4-Cutter
• Diameter: 11/16"
• Length: 13"
• Working Length: 8"
• Shank: SDS Max
• Head Type: Full Carbide Head
• Number of Cutters: 4
• Compatible Tools: SDS-Max Rotary Hammer Drill
• 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 hammer drill bit?

Standard 2-cutter hammer drill bits use less carbide and fail under heat above 800 deg. Fahrenheit, making them vulnerable when they contact rebar. The Rebar Demon uses Diablo Dura-Carbide with up to 2X more carbide material, tolerates heat up to 1800 deg. Fahrenheit, and employs a 4-cutter full carbide head that takes smaller bites of rebar for controlled wear - resulting in up to 7X longer life compared to standard bits.

What SDS-Max rotary hammers is this bit compatible with?

This bit is optimized for maximum performance in corded and cordless SDS-Max rotary hammer drills. The SDS-Max shank is a standardized interface, so it is compatible with SDS-Max tools across professional tool brands.

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

Tri-Metal Fusion Welding is the process Diablo uses to bond the full carbide head to the bit body. It produces a weld up to 3X stronger than standard welding methods, which helps the carbide head stay intact during extreme impact events - such as striking rebar at high hammer energy - preventing head detachment and premature bit failure.

How does the optimized flute design help during drilling?

The optimized flute geometry removes dust and debris from the hole faster than conventional designs. By evacuating material more efficiently, the flute keeps the carbide head cooler during drilling, which preserves the hardness and cutting ability of the carbide - contributing to longer bit life and more consistent hole quality in concrete and reinforced concrete applications.