The Diablo 5/8" x 8" x 13" 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, standard concrete, brick, and block. Diablo developed this rotary hammer bit with a full carbide head and four cutting edges to handle the punishing demands of anchor setting in rebar-laden slabs - delivering controlled wear, reduced vibration, and dramatically longer service life compared to conventional 2-cutter bits. Whether you are drilling anchor holes in structural concrete or working through tough masonry, this SDS-Max bit is designed to stay cooler, cut faster, and last longer on the job.

Key Features

• Up to 7X longer life versus standard 2-cutter hammer drill bits - fewer bit changes on the job means less downtime and lower cost per hole over the life of the tool.
• 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 even after direct rebar hits.
• Impact Resistant 4-Cutter Full Carbide Head - extracts smaller bites of rebar for controlled, consistent carbide wear and reduced vibration, resulting in fast, precise holes in reinforced concrete without premature bit failure.
• Tri-Metal Fusion Welding with up to 3X stronger weld - keeps the full carbide head securely bonded during extreme impact events such as rebar strikes, preventing head separation and maintaining drilling accuracy.
• Precision Tip geometry - delivers the stability and accuracy required for fast, precise holes, which is critical when positioning anchor bolts and fasteners to exact specifications in structural applications.
• Optimized flute design removes dust faster - evacuating debris more efficiently keeps the carbide head cooler for ultimate strength and durability, extending bit life in heavy continuous-use applications.
• Wear mark indicator - ensures precise hole depth is achieved consistently, so every anchor setting hole meets spec without guesswork.
• Optimized for maximum performance in corded and cordless SDS-Max rotary hammers - compatible with a wide range of professional-grade hammer drills for versatile use across job sites.

Why This Product

• Drilling into reinforced concrete risks rapid bit failure when the tip contacts rebar - the 4-cutter full carbide head and Dura-Carbide formula are specifically engineered to handle rebar impact and deliver up to 7X longer service life than standard bits, reducing replacement costs on high-volume concrete drilling projects.
• Heat is the leading cause of carbide head failure during hammer drilling - this bit's ability to withstand up to 1800 deg. Fahrenheit (compared to 800 deg. Fahrenheit for standard bits) and its optimized dust-evacuating flutes work together to keep the head cooler and stronger during extended use.
• Precision anchor setting in structural concrete demands consistent hole depth and diameter - the Precision Tip and wear mark indicator provide the accuracy and control needed to meet anchor installation requirements in critical concrete and masonry structures.
• The 5/8" diameter x 13" overall length with an 8" working length covers a wide range of anchor depth requirements, and the SDS-Max shank delivers compatibility with high-powered corded and cordless rotary hammers for maximum drilling efficiency.

Specifications

• Brand: Diablo
• Manufacturer Part Number: DMAMX1090
• Category: SDS-Max 4-Cutter
• Diameter: 5/8"
• 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 drilling for anchor setting and fastener placement

Frequently Asked Questions

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

The Rebar Demon features a 4-cutter full carbide head produced with Tri-Metal Fusion Welding and Diablo's Dura-Carbide formula, which includes up to 2X more carbide material than standard bits. This combination allows it to withstand up to 1800 deg. Fahrenheit of heat - more than double the 800 deg. Fahrenheit threshold where standard bits typically fail - and delivers up to 7X longer life in reinforced concrete applications.

Can this bit be used in cordless SDS-Max rotary hammers?

Yes. This bit is optimized for maximum performance in both corded and cordless SDS-Max rotary hammer drills, making it suitable for job sites where power access is limited or where a cordless workflow is preferred.

What is the working length of this bit, and why does it matter for anchor setting?

The working length of this bit is 8", with a total overall length of 13". The 8" working length determines the maximum usable drilling depth, which is important when setting anchors that require a specific embedment depth in concrete. The wear mark indicator on the bit helps ensure each hole reaches the correct depth accurately and consistently.

Can this bit drill through rebar encountered during concrete drilling?

Yes. The 4-cutter full carbide head is specifically designed to handle rebar contact. Rather than shattering on impact, it takes small, controlled bites of rebar to deliver consistent carbide wear, reduced vibration, and extended bit life. The Tri-Metal Fusion Welding process provides up to 3X stronger weld strength to keep the head intact during extreme impact situations such as rebar strikes.