The Diablo 5/8" x 31" x 36" Rebar Demon SDS-Max 4-Cutter Full Carbide Head Hammer Drill Bit is engineered for professionals who demand maximum durability and speed when drilling through reinforced concrete, rebar, brick, and block. Diablo's Rebar Demon series represents a revolutionary approach to hammer drill bit design, combining a full carbide head, Dura-Carbide material technology, and Tri-Metal Fusion Welding to deliver a bit that outlasts and outperforms standard 2-cutter alternatives in the most punishing jobsite conditions. Whether you are setting anchors in rebar-heavy slabs or drilling precise holes in structural concrete, this 36" overall length SDS-Max bit with a 31" working length gives you the reach and performance to get the job done right.

Key Features

• Up to 7X longer life versus standard 2-cutter hammer drill bits - drastically reduces bit replacement frequency and downtime on demanding concrete and rebar drilling applications.
• Dura-Carbide with up to 2X more carbide - withstands up to 1800 deg. Fahrenheit of intense heat, compared to standard bits that fail at 800 deg. Fahrenheit, keeping the bit functional during direct rebar contact.
• Impact Resistant 4-Cutter Full Carbide Head - extracts smaller bites of rebar for controlled, consistent carbide wear and reduced vibration, delivering fast and precise holes even through rebar-reinforced concrete.
• Tri-Metal Fusion Welding with up to 3X stronger weld - keeps the full carbide head intact during extreme impact situations such as rebar strikes, preventing head separation and bit failure.
• Precision Tip - delivers the stability and accuracy required for fast, precise holes, making it ideal for anchor setting in reinforced concrete where placement accuracy matters.
• Optimized flute design - removes dust faster, keeping the carbide head cooler for ultimate strength and durability throughout extended drilling sessions.
• Wear mark indicator - ensures precise hole depth making so you never over-drill or under-drill your anchor setting depth.
• Optimized for maximum performance in corded and cordless SDS-Max rotary hammers - compatible with a wide range of professional-grade tools for flexible jobsite use.

Why This Product

• When rebar contact is unavoidable, standard bits overheat and fail quickly - the Rebar Demon's Dura-Carbide withstands up to 1800 deg. Fahrenheit, more than double the heat threshold of standard bits, keeping you drilling instead of replacing bits.
• The 4-cutter full carbide head design reduces vibration and delivers controlled carbide wear, making it a safer and more comfortable choice for operators running high-powered hammer drills through reinforced slabs and structural concrete.
• At 36" overall length with a 31" working length on a 5/8" diameter, this bit provides deep reach for demanding anchor-setting applications in thick reinforced concrete walls, foundations, and decks.
• Tri-Metal Fusion Welding produces a bond up to 3X stronger than conventional welding, meaning the carbide head stays intact even when the bit encounters direct rebar impact - reducing the risk of costly tool damage and bit failure mid-job.

Specifications

• Brand: Diablo
• Model Number: DMAMX1120
• Category: SDS-Max 4-Cutter
• Diameter: 5/8"
• Length: 36"
• Working Length: 31"
• 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 drilling for anchor setting and structural fastening

Frequently Asked Questions

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

The Rebar Demon features a 4-cutter full carbide head made with Dura-Carbide, which provides up to 2X more carbide material than standard bits. This allows it to withstand up to 1800 deg. Fahrenheit of heat, whereas standard bits fail at 800 deg. Fahrenheit. The result is up to 7X longer life, reduced vibration, and consistent performance when drilling through rebar-reinforced concrete.

Will this bit work with my cordless SDS-Max rotary hammer?

Yes. The Diablo Rebar Demon SDS-Max bits are optimized for maximum performance in both corded and cordless SDS-Max rotary hammer drills, making them versatile for a range of professional tool platforms.

What materials can this hammer drill bit drill through?

This bit is designed to drill through reinforced concrete, standard concrete, rebar, brick, and block. The 4-cutter full carbide head and Dura-Carbide construction are specifically engineered to handle direct rebar contact without premature failure.

What is the difference between the overall length and the working length on this bit?

The overall length of this bit is 36", which includes the SDS-Max shank. The working length - the portion of the bit that actively cuts into the material - is 31". This extended working length is designed for deep anchor-setting applications in thick reinforced concrete structures.