The Diablo 3/4 in. x 8 in. x 13 in. Rebar Demon SDS-Max 4-Cutter Full Carbide Head Hammer Drill Bit is engineered for contractors and tradespeople who demand precision and durability when drilling through reinforced concrete, standard concrete, brick, and block. Diablo's Rebar Demon line represents a revolutionary approach to hammer drill bit design, combining a full carbide head, advanced welding technology, and an optimized flute geometry to produce fast, accurate holes even in the most demanding jobsite conditions. Whether you are setting anchors in rebar-heavy slabs or working through dense masonry, this SDS-Max bit is built to outlast and outperform standard 2-cutter alternatives.

Key Features

• Up to 7X longer life versus standard 2-cutter hammer drill bits - dramatically reduces bit replacement frequency and keeps projects moving without costly downtime.
• Diablo 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, so the cutting edge stays intact 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, delivering fast, precise holes in reinforced concrete with less operator fatigue.
• Tri-Metal Fusion Welding with up to 3X stronger weld - keeps the full carbide head intact during extreme impact such as rebar contact, preventing head separation and extending safe working life.
• Precision Tip design - provides the stability and accuracy required for fast, precise holes, which is critical when positioning anchor bolts in reinforced concrete structures.
• Optimized flute design removes dust faster - keeping the carbide head cooler for ultimate strength and durability, reducing heat buildup that can cause premature bit failure.
• Wear mark indicator - ensures precise hole depth control, eliminating guesswork during anchor setting and repeat drilling operations.
• Optimized for corded and cordless SDS-Max rotary hammers - delivers maximum performance regardless of power source, making this bit a versatile choice across tool brands and job conditions.

Why This Product

• Contractors drilling into rebar-reinforced slabs face the constant risk of bit failure from heat and impact - this bit's Dura-Carbide formulation is rated to 1800 deg. Fahrenheit, more than double the heat tolerance of standard bits, making it the right tool for rebar-heavy applications.
• The 4-cutter full carbide head design reduces vibration compared to standard 2-cutter configurations, meaning faster hole completion with less physical strain on the operator over a full workday.
• With a 3/4 in. diameter, 8 in. working length, and 13 in. overall length, this bit covers a wide range of anchor-setting depths in reinforced concrete without needing an extension - a practical advantage when working at awkward angles or in tight spaces.
• Produced in Germany to exacting tolerances, the Tri-Metal Fusion Welding process and Precision Tip geometry ensure consistent hole quality from the first hole to the last - reducing anchor installation failures and rework on the job.

Specifications

• Brand: Diablo
• Model Number: DMAMX1130
• Category: SDS-Max 4-Cutter
• Diameter: 3/4 in.
• Working Length: 8 in.
• Length: 13 in.
• Shank: SDS Max
• Head Type: Full Carbide Head
• Number of Cutters: 4
• Compatible Tools: SDS-Max 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

What makes the Rebar Demon bit different from a standard hammer drill bit?

Standard 2-cutter hammer drill bits typically use less carbide material and fail at around 800 deg. Fahrenheit. The Rebar Demon features Diablo's Dura-Carbide with up to 2X more carbide that withstands up to 1800 deg. Fahrenheit, a 4-cutter full carbide head that reduces vibration and delivers controlled carbide wear, and Tri-Metal Fusion Welding with up to 3X stronger weld strength. The result is up to 7X longer bit life compared to standard 2-cutter bits.

What SDS shank type does this bit use and which tools are compatible?

This bit uses an SDS-Max shank and is optimized for use in corded and cordless SDS-Max rotary hammer drills. It is not compatible with SDS-Plus chuck systems.

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

This bit has a 3/4 in. diameter with an 8 in. working length and a 13 in. overall length. The working length determines the maximum effective drilling depth achievable without extensions.

Can this bit drill through rebar encountered during concrete drilling?

Yes. The Rebar Demon is specifically designed to handle rebar contact. The 4-cutter full carbide head extracts smaller bites of rebar for controlled, consistent carbide wear, while the Tri-Metal Fusion Welding keeps the carbide head intact under extreme impact. The Dura-Carbide material also withstands the intense heat generated when the bit contacts rebar, where standard bits commonly fail.