The Diablo DMAPL4020 Rebar Demon™ is the go-to SDS-Plus 4-Cutter full-carbide hammer drill bit for reinforced concrete. Built for professional-grade durability and speed, it tackles rebar hits with confidence—and yes, it’s as tough as it sounds.

Key Features & Design

• Size: 5/32" diameter x 4" flute length x 6" overall length—designed for precise, fast holes in reinforced concrete.
• Full-carbide head: 4-Cutter design for durability under high-powered hammer drills and rebar impact.
• Durability & heat resistance: Dura-Carbide™ features up to 2X more carbide that withstands up to 1800°F of intense heat, outperforming standard bits that fail around 800°F.
• Wear and vibration control: Impact resistant 4-Cutter full-carbide head extracts smaller bites of rebar for controlled carbide wear and reduced vibration, delivering fast, precise holes.
• Manufacturing & strength: Tri-Metal Fusion Welding provides up to 3X stronger weld to keep the full carbide head intact during extreme impact such as rebar.
• Precision tip: Delivers stability and accuracy required for fast, precise holes in reinforced concrete for anchor setting.
• Application: Reinforced concrete and concrete, ideal for anchor setting and heavy-duty drilling.
• Longevity: Up to 7X longer life versus standard 2-cutter hammer drill bits.

Diablo’s Rebar Demon bits are designed to be the most durable, fastest, and coolest solutions on the market. With Dura-Carbide and Tri-Metal Fusion Welding, you get a reliable bit that stands up to rebar hits and extreme impact—without sacrificing precision or control. If you’re tackling reinforced concrete, this bit is built to keep drilling, long after lesser bits quit.