The Diablo Rebar Demon 5/16 in. x 4 in. x 6 in. SDS-Plus 4-Cutter Full Carbide Head Hammer Drill Bit is engineered for professionals who need maximum durability and speed when drilling through reinforced concrete, concrete, brick, and block. Designed by Diablo with a full carbide head and four cutting edges, this hammer drill bit delivers up to 7X longer life compared to standard 2-cutter bits - making it an ideal solution for anchor setting, structural work, and any application where rebar encounters are unavoidable. Made in the United States, it combines advanced Dura-Carbide material, Tri-Metal Fusion Welding, and an optimized flute design to keep the bit cooler, faster, and more precise through even the most demanding drilling conditions.

Key Features

• Up to 7X longer life versus standard 2-cutter hammer drill bits - fewer bit changes on the job site means more time drilling and less downtime replacing worn bits.
• Dura-Carbide with up to 2X more carbide material - withstands up to 1800 deg. Fahrenheit of intense heat compared to standard bits that fail at 800 deg. Fahrenheit, so the bit keeps cutting even after rebar hits that would destroy a conventional bit.
• Impact Resistant 4-Cutter Full Carbide Head - extracts smaller bites of rebar for controlled, consistent carbide wear and reduced vibration, delivering fast, precise holes in reinforced concrete without sacrificing bit integrity.
• Tri-Metal Fusion Welding with up to 3X stronger weld - keeps the full carbide head intact during extreme impact such as rebar strikes, preventing head breakage that can damage workpieces and halt production.
• Precision Tip geometry - delivers the stability and accuracy required for fast, precise holes, which is especially critical when setting anchors in reinforced concrete where hole placement is exact.
• Optimized flute design removes dust faster - keeping the carbide head cooler for ultimate strength and durability, which extends bit life and maintains cutting speed over the full depth of each hole.
• Wear mark indicator - ensures precise hole making by giving the operator a clear visual reference for hole depth, reducing the risk of under- or over-drilling.
• Optimized for corded and cordless SDS-Plus rotary hammers - provides maximum performance across a wide range of tool platforms so contractors are not locked into a single tool brand or power source.

Why This Product

• When drilling through rebar-reinforced concrete, standard 2-cutter bits can fail quickly or shatter under the impact - the 4-cutter full carbide head on this bit is specifically designed to take small, controlled bites of rebar, reducing the shock that causes premature wear and breakage.
• Heat is one of the primary causes of bit failure in demanding concrete drilling applications - Dura-Carbide resists heat up to 1800 deg. Fahrenheit, more than double the threshold of standard bits, so the cutting edge stays sharp and the bit stays productive through extended drilling sessions.
• Precision anchor setting in reinforced concrete requires a stable, accurate hole - the Precision Tip and wear mark indicator work together to give the user control over both placement and depth, resulting in reliable, code-compliant anchor installations.
• This bit is compatible with both corded and cordless SDS-Plus rotary hammer drills, making it a versatile addition to any concrete drilling kit - whether working from a power outlet or on a battery-powered jobsite.

Specifications

• Brand: Diablo
• Model Number: DMAPL4110
• Sub-Brand: Rebar Demon
• Category: SDS-Plus 4-Cutter
• Diameter: 5/16 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
• Pack Quantity: 1
• Country of Origin: United States

Approved Applications

• Reinforced concrete and concrete drilling
• Anchor setting in reinforced concrete
• Drilling through rebar-embedded concrete, brick, and block

Frequently Asked Questions

Can this bit be used with a cordless SDS-Plus rotary hammer?

Yes. The Diablo Rebar Demon SDS-Plus bit is optimized for maximum performance in both corded and cordless SDS-Plus rotary hammer drills, so it delivers consistent results regardless of whether you are working from a power source or relying on battery-powered tools.

Why does this bit last longer than standard hammer drill bits when hitting rebar?

The 4-cutter full carbide head is designed to take small, controlled bites of rebar rather than absorbing the full shock of each hit. This controlled carbide wear, combined with Dura-Carbide material that withstands up to 1800 deg. Fahrenheit - compared to standard bits that fail at 800 deg. Fahrenheit - results in up to 7X longer life versus standard 2-cutter hammer drill bits.

What is the working length and total length of this bit?

This bit has a working length of 4 in. and a total length of 6 in. with a 5/16 in. diameter. The wear mark indicator helps the operator maintain precise hole depth throughout the drilling process.

What materials can this hammer drill bit drill through?

This Diablo Rebar Demon bit is designed to drill through reinforced concrete, concrete, rebar, brick, and block. It is specifically engineered to handle rebar impacts that would cause standard bits to break or wear out prematurely, making it well suited for anchor setting and structural drilling in reinforced concrete.