The Diablo 1 1/2" x 47" x 52" Rebar Demon SDS-Max 4-Cutter Full Carbide Head Hammer Drill Bit is engineered for professionals who need maximum durability and speed when drilling through reinforced concrete, standard concrete, brick, block, and rebar. Designed around Diablo's full carbide head technology and advanced flute geometry, this heavy-duty SDS-Max bit delivers controlled, precise holes even under the most punishing jobsite conditions - making it the go-to choice for anchor setting and structural drilling applications where standard bits fall short.

Key Features

• Up to 7X longer life versus standard 2-cutter hammer drill bits - reduces the frequency of bit replacement and overall tooling cost on demanding projects
• Dura-Carbide construction features up to 2X more carbide material that withstands up to 1800 deg. Fahrenheit of intense heat - keeps the bit performing where standard bits fail at 800 deg. Fahrenheit, especially during rebar contact
• Impact Resistant 4-Cutter Full Carbide Head extracts smaller bites of rebar for controlled, consistent carbide wear and reduced vibration - delivers fast, precise holes without sacrificing bit integrity
• Tri-Metal Fusion Welding features up to 3X stronger weld to keep the full carbide head intact during extreme impact such as rebar - prevents catastrophic head separation on high-powered rotary hammer drills
• Precision Tip delivers stability and accuracy required for fast, precise holes - critical when setting anchors in reinforced concrete where hole placement tolerance is tight
• Optimized flute design removes dust faster, keeping the carbide head cooler for ultimate strength and durability - extends bit life by reducing heat buildup during continuous drilling
• Wear mark indicator ensures precise hole making - helps operators achieve consistent hole depth without guesswork or additional measuring
• Optimized for maximum performance in corded and cordless SDS-Max rotary hammers - versatile compatibility across a wide range of professional-grade tools

Why This Product

• Rebar is the number one cause of standard bit failure - the 4-cutter full carbide head and Dura-Carbide material are specifically engineered to absorb rebar impacts with controlled wear rather than sudden breakage, giving crews confidence to drill through unknown slab conditions
• The 47" working length and 52" overall length make this bit ideal for deep anchor installations and through-slab drilling where shorter bits simply cannot reach
• Tri-Metal Fusion Welding and the full carbide head work together to handle the stress of high-powered hammer drills - professional crews running heavy SDS-Max machines can push this bit hard without risking premature failure
• The optimized flute geometry continuously clears debris from the hole during drilling, reducing heat at the cutting head and maintaining accuracy across the full 47" working length - a direct advantage in productivity on large concrete drilling jobs

Specifications

• Brand: Diablo
• Manufacturer Part Number: DMAMX1385
• Category: SDS-Max 4-Cutter
• Diameter: 1 1/2"
• Length: 52"
• Working Length: 47"
• 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, including anchor setting in rebar-dense slabs and structural members

Frequently Asked Questions

What makes the Rebar Demon different from a standard 2-cutter hammer drill bit?

The Rebar Demon uses a 4-cutter full carbide head made with Dura-Carbide, which provides up to 2X more carbide material than standard bits. This allows it to withstand up to 1800 deg. Fahrenheit of heat - more than twice the 800 deg. Fahrenheit threshold at which standard bits fail. The result is up to 7X longer life, reduced vibration, and the ability to drill through rebar without catastrophic bit failure.

What rotary hammer tools is this bit compatible with?

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

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

Tri-Metal Fusion Welding is the joining process Diablo uses to bond the full carbide head to the bit body. It produces a weld that is up to 3X stronger than conventional welds, which helps keep the carbide head intact when the bit encounters rebar or other extreme impact conditions - preventing head separation and maintaining drilling accuracy throughout the bit's life.

What does the wear mark indicator do?

The wear mark indicator is a visual reference built into the bit that ensures precise hole making. It helps the operator achieve accurate, consistent hole depth during drilling operations such as anchor setting in reinforced concrete, eliminating the need for additional depth-measuring steps.