The Diablo 1/2" x 31" x 36" 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 hammer drill bit design, combining a full carbide head with advanced heat resistance and precision tip geometry to deliver fast, accurate holes - even when rebar stands in the way. Whether you're setting anchors in structural concrete or boring through masonry, this SDS-Max bit is built to outlast standard 2-cutter bits and keep your rotary hammer performing at peak efficiency.

Key Features

• Up to 7X longer life versus standard 2-cutter hammer drill bits - dramatically reduces bit replacement frequency and downtime on the job site, lowering total cost per hole.
• Dura-Carbide with up to 2X more carbide material - withstands up to 1800 deg. Fahrenheit of intense heat, far exceeding the 800 deg. Fahrenheit threshold where standard bits fail, so performance is maintained through 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 and precise holes without premature head failure.
• Tri-Metal Fusion Welding with up to 3X stronger weld - keeps the full carbide head intact during extreme impact such as rebar contact, preventing breakage that would cause work stoppages or safety hazards.
• Precision Tip geometry - delivers the stability and accuracy required for fast, precise holes in reinforced concrete, making anchor setting reliable and repeatable.
• Optimized flute design - removes dust faster and keeps the carbide head cooler during drilling, preserving ultimate strength and durability over the life of the bit.
• Wear mark indicator - ensures precise hole depth making so anchor installations meet specification requirements without guesswork.
• Compatible with corded and cordless SDS-Max rotary hammers - maximizes performance flexibility across a wide range of hammer drills on the job site.

Why This Product

• When drilling into reinforced concrete where hidden rebar is a constant risk, the 4-cutter full carbide head and Tri-Metal Fusion Welding provide the impact resistance needed to keep drilling without destroying the bit - a critical advantage over standard 2-cutter designs.
• The combination of Dura-Carbide heat tolerance up to 1800 deg. Fahrenheit and an optimized flute design that evacuates dust quickly means this bit stays cooler and stronger longer, making it the right choice for high-volume anchor setting in structural concrete applications.
• With a 36" overall length and 31" working length, this bit reaches deep embedment depths required for heavy anchoring in thick reinforced concrete slabs or walls where shorter bits simply cannot reach.
• The up to 7X longer service life compared to standard hammer drill bits means fewer bit changes per project, keeping productivity high and material costs lower across large-scale concrete drilling work.

Specifications

• Brand: Diablo
• Model Number: DMAMX1042
• Category: SDS-Max 4-Cutter Hammer Drill Bits
• Diameter: 1/2"
• Length: 36"
• Working Length: 31"
• Shank: SDS Max
• Head Type: Full Carbide Head
• 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 the Rebar Demon different from a standard hammer drill bit?

Standard 2-cutter hammer drill bits typically fail when they encounter rebar and can only withstand heat up to approximately 800 deg. Fahrenheit. The Diablo Rebar Demon uses a 4-cutter full carbide head with Dura-Carbide that tolerates up to 1800 deg. Fahrenheit, extracts smaller bites of rebar for controlled wear, and delivers up to 7X longer life than standard bits.

What type of rotary hammer is required to use this bit?

This bit is designed for use with SDS-Max rotary hammer drills, both corded and cordless. The SDS-Max shank ensures a secure, tool-free chuck connection compatible with SDS-Max hammer drills.

What materials can this bit drill through?

This Rebar Demon bit is rated for use in reinforced concrete, concrete, rebar, and brick/block. The 4-cutter full carbide head and Tri-Metal Fusion Welding are specifically engineered to handle the extreme impact of rebar encounters that would damage standard bits.

What do the overall length and working length measurements mean for my application?

The overall length of 36" refers to the total length of the bit from end to end, while the 31" working length refers to the usable drilling depth the flutes can reach. This extended working length makes the bit well suited for deep anchor embedment in thick reinforced concrete slabs or walls.