The Diablo 11/16" x 16" x 21" 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, concrete, brick, and block. Diablo's Rebar Demon series represents a revolutionary approach to carbide-head hammer drill bit design, combining a full carbide head, precision tip geometry, and advanced Tri-Metal Fusion Welding to handle the brutal conditions of rebar-embedded concrete that defeat standard bits. With a 21" overall length, 16" working length, and 11/16" diameter on an SDS-Max shank, this hammer drill bit delivers fast, precise holes in the most demanding anchor-setting and concrete drilling applications.

Key Features

• Up to 7X longer life versus standard 2-cutter hammer drill bits - significantly reduces bit replacement frequency and downtime on the job site
• Diablo Dura-Carbide with up to 2X more carbide mass withstands up to 1800 deg. Fahrenheit of intense heat versus standard bits that fail at 800 deg. Fahrenheit - maintains cutting performance even after repeated rebar contact
• Impact Resistant 4-Cutter Full Carbide Head extracts smaller bites of rebar for controlled, consistent carbide wear and reduced vibration - delivers faster, more accurate holes with less operator fatigue
• Tri-Metal Fusion Welding features up to 3X stronger weld to keep the full carbide head intact during extreme impact such as rebar - prevents head separation and extends bit life in high-stress applications
• Precision Tip delivers stability and accuracy required for fast, precise holes - ensures proper anchor placement in reinforced concrete without wandering or off-center starts
• Optimized flute design removes dust faster, keeping the carbide head cooler for ultimate strength and durability - reduces heat buildup that causes premature wear in standard bits
• Wear mark indicator ensures precise hole making - eliminates guesswork and supports consistent depth control during anchor setting
• Optimized for maximum performance in corded and cordless SDS-Max rotary hammers - versatile compatibility for both job-site and field use

Why This Product

• Drilling into rebar-embedded concrete destroys standard 2-cutter bits rapidly - the Rebar Demon's 4-cutter full carbide head is specifically engineered to survive rebar contact through controlled wear, making it the right choice for reinforced concrete anchor setting where bit survival is not guaranteed with conventional options.
• The combination of Dura-Carbide heat resistance up to 1800 deg. Fahrenheit and an optimized flute dust-removal design means the bit stays cooler and stronger longer, reducing costly bit changes and maintaining drilling speed throughout heavy-use applications.
• Tri-Metal Fusion Welding with up to 3X stronger weld addresses one of the most common failure points in carbide-head bits - head breakage under extreme impact - giving crews confidence when pushing through tough, aggregate-heavy concrete with high-powered SDS-Max rotary hammers.
• With a 21" overall length and 16" working length at 11/16" diameter, this bit reaches the depths required for deep anchor installations in thick reinforced concrete slabs, walls, and structural elements where shorter bits simply cannot reach.

Specifications

• Brand: Diablo
• Model Number: DMAMX1430
• Diameter: 11/16"
• Overall Length: 21"
• Working Length: 16"
• 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 through-hole applications

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 rather than a standard 2-cutter design. This allows the bit to take smaller, more controlled bites of rebar, resulting in reduced vibration, consistent carbide wear, and up to 7X longer life compared to standard 2-cutter hammer drill bits. The Dura-Carbide formula also withstands up to 1800 deg. Fahrenheit of heat versus the 800 deg. Fahrenheit threshold where standard bits typically fail.

Will this bit work with cordless SDS-Max rotary hammers?

Yes. This Rebar Demon 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 as well as those with full electrical infrastructure.

What does the wear mark indicator do?

The wear mark indicator is a reference mark on the bit that helps operators ensure precise hole depth during drilling. This is especially useful in anchor-setting applications where consistent hole depth is critical to proper anchor performance in reinforced concrete and concrete substrates.

What is Tri-Metal Fusion Welding and why does it matter?

Tri-Metal Fusion Welding is Diablo's proprietary welding process used to bond the full carbide head to the bit body. It produces a weld that is up to 3X stronger than conventional methods, keeping the carbide head intact during the extreme impact forces encountered when drilling through rebar-embedded concrete with high-powered SDS-Max rotary hammers.