The Diablo Rebar Demon 5/8 in. x 10 in. x 12 in. SDS-Plus 4-Cutter Full Carbide Head Hammer Drill Bit is engineered for professionals who demand speed, precision, and durability when drilling into reinforced concrete, standard concrete, brick, and block. Built on Diablo's revolutionary Dura-Carbide technology, this hammer drill bit withstands up to 1800 deg. Fahrenheit of intense heat - more than double the threshold of standard bits that fail at 800 deg. Fahrenheit - making it the go-to choice for anchor setting in rebar-laden concrete. With its 4-cutter full carbide head, optimized flute geometry, and Tri-Metal Fusion Welding construction, the Rebar Demon delivers controlled, consistent performance across corded and cordless SDS-Plus rotary hammer drills.

Key Features

• Up to 7X longer life versus standard 2-cutter hammer drill bits - dramatically reduces bit replacement frequency and overall cost per hole on demanding jobsites.
• Dura-Carbide with up to 2X more carbide material - withstands up to 1800 deg. Fahrenheit of heat during rebar contact, compared to standard bits that fail at 800 deg. Fahrenheit, so the bit keeps cutting even in the most punishing conditions.
• 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 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 rebar impacts, preventing catastrophic head separation and extending the usable life of each bit.
• Precision Tip geometry - delivers the stability and accuracy required for fast, precise holes in reinforced concrete, critical for accurate anchor setting and layout work.
• Optimized flute design - removes dust faster and keeps the carbide head cooler during drilling, maintaining ultimate strength and durability across extended use in concrete and masonry materials.
• Wear mark indicator - ensures precise hole depth control so anchor installations meet exact depth specifications without guesswork.
• Compatible with corded and cordless SDS-Plus rotary hammers - versatile across tool platforms, giving crews flexibility on the jobsite without needing separate bit inventories.

Why This Product

• Drilling through rebar is one of the fastest ways to destroy standard hammer drill bits - the Rebar Demon's 4-cutter full carbide head is specifically engineered to absorb rebar impacts by taking controlled, smaller bites rather than suffering sudden carbide failure, making it the right tool when rebar encounters are expected or unavoidable.
• Heat buildup is the hidden killer of carbide bits in concrete drilling - Dura-Carbide survives up to 1800 deg. Fahrenheit while standard bits fail at 800 deg. Fahrenheit, and the optimized flute design actively removes heat-generating dust, combining two lines of defense against thermal degradation in one bit.
• With up to 7X longer bit life compared to standard 2-cutter hammer drill bits, the Rebar Demon reduces downtime from bit changes and lowers the overall cost of drilling operations in reinforced concrete applications.
• The 5/8 in. diameter and 10 in. working length are well-suited for anchor setting depths in reinforced concrete, and the Precision Tip with wear mark indicator ensures each hole meets the accuracy and depth consistency that structural and fastening applications demand.

Specifications

• Brand: Diablo
• Sub-Brand: Rebar Demon
• Model Number: DMAPL4230
• Category: SDS-Plus 4-Cutter
• Diameter: 5/8 in.
• Length: 12 in.
• Working Length: 10 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: Germany

Approved Applications

• Reinforced concrete and concrete drilling for anchor setting and through-hole applications

Frequently Asked Questions

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

The Rebar Demon uses a 4-cutter full carbide head instead of the 2-cutter design found on standard bits. This configuration extracts smaller bites of rebar during drilling, resulting in controlled, consistent carbide wear, reduced vibration, and up to 7X longer bit life. Additionally, Dura-Carbide provides up to 2X more carbide material and withstands up to 1800 deg. Fahrenheit of heat, compared to standard bits that fail at just 800 deg. Fahrenheit.

What tools is this bit compatible with?

This bit is designed for use with SDS-Plus rotary hammer drills and is optimized for maximum performance in both corded and cordless SDS-Plus rotary hammers. It uses a standard SDS-Plus shank for secure, tool-free chuck engagement.

What is the purpose of the wear mark indicator on the Rebar Demon bit?

The wear mark indicator is a built-in reference point on the bit that helps ensure precise hole depth during drilling. This is especially important in anchor-setting applications where hitting exact embedment depths is required for structural performance and code compliance.

How does Tri-Metal Fusion Welding improve performance compared to standard welding methods?

Tri-Metal Fusion Welding creates a weld that is up to 3X stronger than standard weld methods used on conventional hammer drill bits. This significantly stronger bond keeps the full carbide head intact during extreme impact situations - such as unexpected rebar contact - preventing head separation and maintaining drilling performance throughout the life of the bit.