The Diablo 13/16" x 16" x 21" Rebar Demon SDS-Max 4-Cutter Full Carbide Head Hammer Drill Bit delivers revolutionary performance for professionals drilling through reinforced concrete, standard concrete, brick, and block. Engineered in Germany and built around Diablo's proprietary Dura-Carbide technology, this SDS-Max bit is purpose-built to outlast standard hammer drill bits in the most punishing jobsite conditions - including direct rebar contact - while maintaining speed, precision, and reduced operator fatigue throughout the life of the bit.

Key Features

• Up to 7X longer life versus standard 2-cutter hammer drill bits - fewer bit changes, lower cost per hole, and more uptime on demanding concrete drilling jobs
• Dura-Carbide construction features up to 2X more carbide that withstands up to 1800 deg. Fahrenheit of intense heat - far beyond the 800 deg. Fahrenheit threshold where standard bits fail, so the bit stays strong 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 while protecting the operator and the tool
• Tri-Metal Fusion Welding features up to 3X stronger weld to keep the full carbide head intact during extreme impact such as rebar - preventing head loss or breakage that would end a standard bit's service life
• Precision Tip delivers stability and accuracy required for fast, precise holes - essential for anchor setting in reinforced concrete where placement tolerance is critical
• Optimized flute design removes dust faster, keeping the carbide head cooler for ultimate strength and durability - reduced heat buildup means consistent cutting performance from the first hole to the last
• Wear mark indicator ensures precise hole making - takes the guesswork out of hole depth for anchor setting and other depth-critical applications
• Optimized for maximum performance in corded and cordless SDS-Max rotary hammers - compatible across a wide range of professional tool platforms without sacrificing speed or bit life

Why This Product

• When drilling into reinforced concrete, rebar contact is unavoidable - the 4-cutter full carbide head and Tri-Metal Fusion Welding allow this bit to absorb rebar impacts that would crack or separate the head of a conventional 2-cutter bit, making it the right choice for anchor setting in structural concrete
• Heat is the primary reason standard hammer drill bits fail prematurely - with Dura-Carbide tolerating up to 1800 deg. Fahrenheit versus 800 deg. Fahrenheit for standard bits, this Rebar Demon bit keeps cutting long after ordinary bits have been discarded, reducing total bit cost on high-volume drilling projects
• The 21" overall length with 16" working length gives users the reach needed to drill deep anchor holes in thick concrete walls, slabs, and structural members without repositioning or extension adapters
• For professionals running both corded and cordless SDS-Max rotary hammers on the same site, the bit's optimization across both power sources provides consistent results regardless of which tool is in hand

Specifications

• Brand: Diablo
• MPN: DMAMX1160
• Category: SDS-Max 4-Cutter Hammer Drill Bits
• Diameter: 13/16"
• Length: 21"
• Working Length: 16"
• 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 this bit different from a standard 2-cutter SDS-Max hammer drill bit?

This Rebar Demon bit features a 4-cutter full carbide head produced with Tri-Metal Fusion Welding, providing up to 3X stronger weld strength and up to 7X longer service life compared to standard 2-cutter bits. The 4-cutter geometry takes smaller bites of rebar, resulting in controlled carbide wear, reduced vibration, and consistent hole quality even after repeated rebar contact - performance that a standard 2-cutter bit cannot sustain.

Can this bit handle direct rebar contact without breaking?

Yes. The impact resistant 4-cutter full carbide head is specifically engineered to withstand rebar hits. Tri-Metal Fusion Welding keeps the carbide head bonded to the bit body during extreme impact situations, while the Dura-Carbide formulation withstands up to 1800 deg. Fahrenheit of heat generated by rebar contact - more than double the 800 deg. Fahrenheit threshold at which standard bits fail.

What SDS-Max rotary hammers is this bit compatible with?

This bit is optimized for maximum performance in both corded and cordless SDS-Max rotary hammers. The SDS-Max shank interface is a standardized system, so the bit fits any tool designed to accept SDS-Max shanks.

What does the wear mark indicator do?

The wear mark indicator is a visual reference point on the bit that allows the user to monitor hole depth during drilling. This feature ensures precise hole making - particularly important for anchor setting in reinforced concrete where hitting the correct embedment depth is required for proper anchor performance.