The Diablo Rebar Demon 1-1/8 in. x 16 in. x 21 in. 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, rebar, and brick/block. Built with Diablo's proprietary Dura-Carbide technology and a full carbide head, this heavy-duty rotary hammer bit delivers up to 7X longer life versus standard 2-cutter bits - making it the go-to choice for anchor setting and structural drilling in the most demanding jobsite conditions.

Key Features

• Up to 7X longer life versus standard 2-cutter hammer drill bits - dramatically reduces bit replacement frequency and downtime on demanding concrete drilling jobs.
• Dura-Carbide with up to 2X more carbide - withstands up to 1800 deg. Fahrenheit of intense heat, compared to standard bits that fail at 800 deg. Fahrenheit, so the bit keeps cutting 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 in reinforced concrete without premature head failure.
• Tri-Metal Fusion Welding with up to 3X stronger weld - keeps the full carbide head intact during extreme impact events such as rebar contact, preventing dangerous head separation during use.
• Precision Tip - provides the stability and accuracy required for fast, precise holes in reinforced concrete, which is critical for accurate anchor setting and structural work.
• Optimized flute design removes dust faster - keeps the carbide head cooler for ultimate strength and durability throughout the life of the bit, reducing heat-related wear.
• Wear mark indicator - ensures precise hole making so operators know exactly when the bit has reached the required depth, reducing the risk of under- or over-drilling.
• Optimized for corded and cordless SDS-Max rotary hammers - delivers maximum performance regardless of power source, giving crews flexibility on the jobsite.

Why This Product

• For contractors drilling into reinforced concrete where rebar strikes are unavoidable, the 4-Cutter Full Carbide Head is specifically engineered to handle rebar impact rather than fail under it - resulting in controlled wear and a dramatically longer service life.
• The Dura-Carbide formulation tolerates heat up to 1800 deg. Fahrenheit - more than twice the heat threshold of standard bits - meaning the bit maintains cutting performance even in high-friction, high-heat drilling conditions.
• Tri-Metal Fusion Welding addresses one of the most common failure points in hammer drill bits - weld breakage under impact - by producing a bond up to 3X stronger than standard welding methods, reducing the risk of catastrophic head loss.
• With a 16 in. working length and 21 in. overall length in an SDS-Max shank configuration, this bit is suited for deep anchor holes in thick reinforced concrete slabs and walls where shorter bits cannot reach.

Specifications

• Brand: Diablo
• Manufacturer Part Number: DMAMX1260
• Diameter: 1-1/8 in.
• Length: 21 in.
• Working Length: 16 in.
• 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, including anchor setting in rebar-dense structural applications

Frequently Asked Questions

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

Unlike standard 2-cutter bits, the Rebar Demon features a 4-Cutter Full Carbide Head that takes smaller bites of rebar for controlled, consistent carbide wear and reduced vibration. Combined with Dura-Carbide that withstands up to 1800 deg. Fahrenheit - versus 800 deg. Fahrenheit for standard bits - and Tri-Metal Fusion Welding with up to 3X stronger weld strength, the Rebar Demon delivers up to 7X longer life in reinforced concrete applications.

What rotary hammer tools is this bit compatible with?

This bit is designed for use with SDS-Max rotary hammer drills, both corded and cordless, and is optimized for maximum performance across both power source types.

What materials can this bit drill through?

The Rebar Demon SDS-Max bit is rated for drilling through reinforced concrete, concrete, rebar, and brick/block, making it versatile for structural and masonry drilling tasks that involve embedded rebar.

What are the key dimensions of this bit?

This bit has a 1-1/8 in. diameter, a 21 in. overall length, and a 16 in. working length. It uses an SDS-Max shank and is sold as a single bit per pack.