The Diablo Rebar Demon SDS-Plus 4-Cutter Full Carbide Head Hammer Drill Bits are engineered for professionals who demand maximum durability and speed when drilling into reinforced concrete, standard concrete, brick, and block. This pack of 25 bits - size 3/16 in. diameter with a 6 in. overall length and 4 in. working length - delivers a revolutionary approach to hammer drilling that addresses the most demanding job site conditions, including direct rebar strikes. Made in the United States, these bits combine advanced carbide technology with precision engineering to outperform standard 2-cutter bits in speed, heat resistance, and service life.

Key Features

• Up to 7X longer life versus standard 2-cutter hammer drill bits - fewer bit changes and lower total cost per hole on high-volume reinforced concrete projects
• Dura-Carbide full carbide head features up to 2X more carbide that withstands up to 1800 deg. Fahrenheit of intense heat - standard bits fail at 800 deg. Fahrenheit, meaning this bit keeps cutting in conditions that destroy ordinary tooling
• Impact Resistant 4-Cutter Full Carbide Head extracts smaller bites of rebar for controlled, consistent carbide wear and reduced vibration - delivering fast, precise holes even when rebar is encountered
• 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 and dangerous bit failure
• Precision Tip delivers stability and accuracy required for fast, precise holes - critical for anchor setting in reinforced concrete where hole placement matters
• Optimized flute design removes dust faster, keeping the carbide head cooler for ultimate strength and durability - reducing heat buildup that shortens bit life
• Wear mark indicator ensures precise hole making - takes the guesswork out of depth control on the job site
• Optimized for maximum performance in corded and cordless SDS Plus or SDS Max rotary hammers - compatible with a wide range of professional rotary hammer tools

Why This Product

• Designed to survive direct rebar contact - while most hammer drill bits are destroyed or severely damaged when they hit rebar, the Rebar Demon's 4-cutter full carbide head and Tri-Metal Fusion Welding absorb and distribute the impact, keeping the bit intact and functional
• Exceptional heat resistance means this bit keeps working in high-heat drilling scenarios - sustaining performance up to 1800 deg. Fahrenheit versus 800 deg. Fahrenheit for standard bits, which is critical when drilling multiple holes in dense or heavily reinforced concrete
• The 25-pack quantity makes this a smart choice for contractors and crews tackling large anchor-setting projects in reinforced concrete - consistent performance across every bit in the pack reduces rework and delays
• Dust evacuation through the optimized flute design reduces heat at the cutting head during extended use, translating directly into more holes per bit and less frequent tool downtime on demanding concrete drilling applications

Specifications

• Brand: Diablo
• Sub-Brand: Rebar Demon
• Manufacturer Part Number: DMAPL4040-P25
• Category: SDS-Plus 4-Cutter
• Diameter: 3/16 in.
• Length: 6 in.
• Working Length: 4 in.
• Shank: SDS Plus
• Head Type: Full Carbide Head
• Number of Cutters: 4
• Compatible Tools: SDS-Plus Rotary Hammer Drill
• Compatible Materials: Reinforced Concrete; Concrete; Rebar; Brick/Block
• Pack Quantity: 25
• Country of Origin: United States

Approved Applications

• Reinforced concrete and concrete

Frequently Asked Questions

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

Standard 2-cutter hammer drill bits typically fail at temperatures around 800 deg. Fahrenheit and are not designed to withstand direct rebar contact. The Rebar Demon features a 4-cutter full carbide head with Dura-Carbide that handles up to 1800 deg. Fahrenheit of heat, plus Tri-Metal Fusion Welding for up to 3X stronger head attachment - delivering up to 7X longer life compared to standard 2-cutter bits.

What rotary hammers are compatible with these SDS-Plus bits?

These bits are optimized for maximum performance in both corded and cordless SDS Plus rotary hammer drills. The SDS Plus shank design locks securely into any standard SDS Plus chuck.

What materials can these hammer drill bits be used on?

The Rebar Demon 3/16 in. SDS-Plus bits are designed for use on reinforced concrete, concrete, rebar, and brick/block surfaces. The 4-cutter full carbide head and impact-resistant design make them particularly effective in reinforced concrete where rebar strikes are likely.

What is the working length and how does the wear mark indicator help on the job?

The working length on this bit is 4 in., with an overall length of 6 in. The built-in wear mark indicator gives the operator a clear visual reference to ensure precise hole depth is achieved on every hole - especially important for accurate anchor setting in reinforced concrete applications.