The Diablo 1-3/8" x 47" x 52" Rebar Demon SDS-Max 4-Cutter Full Carbide Head Hammer Drill Bit is engineered for professionals who need a dependable, long-lasting solution for drilling through reinforced concrete, standard concrete, and brick or block. Designed by Diablo as part of their revolutionary Rebar Demon lineup, this heavy-duty SDS-Max hammer drill bit features a full carbide head construction and a 4-cutter geometry that tackles rebar without sacrificing speed, precision, or bit longevity. Whether you are setting anchors in rebar-dense slabs or boring clean holes through brick and block, this 52" overall length bit with a 47" working length delivers the reach, strength, and performance demanded by high-powered rotary hammer applications.

Key Features

• Up to 7X longer life versus standard 2-cutter hammer drill bits - significantly reduces bit replacement frequency and overall cost on demanding jobsites
• Diablo Dura-Carbide with up to 2X more carbide material withstands up to 1800 deg. Fahrenheit of intense heat - keeps the bit functional and intact in conditions where standard bits fail at 800 deg. Fahrenheit
• Impact Resistant 4-Cutter Full Carbide Head takes smaller bites of rebar for controlled, consistent carbide wear and reduced vibration - delivers fast, precise holes even when rebar is encountered unexpectedly
• Tri-Metal Fusion Welding creates a weld up to 3X stronger than standard methods - keeps the full carbide head intact during extreme impact, preventing breakage and extending bit life in rebar-heavy concrete
• Precision Tip provides stability and accuracy required for fast, precise hole placement - essential for reliable anchor setting in reinforced concrete
• Optimized flute design removes dust faster, keeping the carbide head cooler - maintains ultimate carbide strength and durability throughout extended drilling sessions
• Wear mark indicator built into the bit - ensures precise hole depth control so you consistently hit target depth without guesswork
• Optimized for maximum performance in both corded and cordless SDS-Max rotary hammers - gives professionals flexibility across different tool setups on the jobsite

Why This Product

• For contractors drilling in rebar-reinforced concrete, the 4-cutter full carbide head takes controlled bites of rebar rather than grinding against it aggressively - reducing vibration, protecting the bit, and producing cleaner holes for anchor setting applications.
• The Dura-Carbide formulation survives heat exposure up to 1800 deg. Fahrenheit, more than twice the threshold of standard bits - making this drill bit a practical choice for continuous, high-intensity drilling where tool failure is costly.
• At 52" overall length with a 47" working length, this SDS-Max bit reaches deep into thick concrete slabs and walls, covering applications where shorter bits simply cannot perform without extensions or compromises.
• Produced in Germany and paired with Tri-Metal Fusion Welding technology, the bit is built to handle the stress of high-powered rotary hammers - giving professionals a reliable, long-lasting tool that reduces downtime from bit changes and breakage.

Specifications

• Brand: Diablo
• Manufacturer Part Number: DMAMX1355
• Diameter: 1-3/8"
• Length: 52"
• Working Length: 47"
• Shank: SDS Max
• Head Type: Full Carbide Head
• Number of Cutters: 4
• Category: SDS-Max 4-Cutter
• Materials: Concrete; Concrete with Rebar; Brick/Block
• Pack Quantity: 1
• Country of Origin: Germany

Approved Applications

• Reinforced concrete and concrete
• Concrete with rebar
• Brick and block masonry

Frequently Asked Questions

What makes the Rebar Demon 4-cutter design better than a standard 2-cutter hammer drill bit?

The 4-cutter full carbide head takes smaller, more controlled bites of rebar compared to a standard 2-cutter design. This controlled removal reduces vibration, delivers more consistent carbide wear, and results in up to 7X longer bit life versus standard 2-cutter hammer drill bits - which means fewer bit changes and more productive drilling time on the jobsite.

How does the Dura-Carbide construction help when drilling into rebar-reinforced concrete?

Diablo's Dura-Carbide features up to 2X more carbide material than standard bits. This extra carbide mass allows the bit to withstand up to 1800 deg. Fahrenheit of intense heat generated during rebar contact - a critical advantage given that standard bits fail at 800 deg. Fahrenheit. The result is a bit that stays functional and retains its cutting integrity even during repeated rebar hits.

Is this bit compatible with cordless SDS-Max rotary hammers?

Yes. This Diablo Rebar Demon bit is optimized for maximum performance in both corded and cordless SDS-Max rotary hammers, making it a versatile choice for a wide range of professional drilling setups.

What role does the Precision Tip play during drilling in reinforced concrete?

The Precision Tip delivers the stability and accuracy required to produce fast, precise holes - particularly important when drilling into reinforced concrete for anchor setting. It helps the bit start and stay on target, reducing bit walking and ensuring holes are drilled to the correct position and depth. The built-in wear mark indicator also supports consistent, accurate hole depth throughout the drilling process.