Diablo Demolition Chisel DMAHX118CH120 1-1/8 Inch Hex Shank (20 Inch Heat-Treated Alloy Steel Narrow Flat Concrete Brick Masonry Breaking Tool Unit)

Diablo DMAHX118CH120 1-1/8" x 20" Hex Shank Narrow Demolition Chisel

The Diablo DMAHX118CH120 1-1/8-inch by 20-inch hex shank narrow demolition chisel fractures reinforced concrete slabs, foundation footings, aged brickwork, and structural masonry. Engineered from drop-forged high-strength alloy steel that undergoes a specialized thermal heat-treatment process to maximize impact resistance and prevent shank breakage under heavy hammer strikes, this 1-1/8-inch wide narrow chisel maintains sharp cutting geometry through abrasive aggregates. Outfitted with an extended 20-inch reach for deep structural penetration and a standard 1-1/8-inch hex drive tang with retaining collar notch, it equips commercial demolition crews, concrete flatwork contractors, and heavy masons with reliable breaking performance across all high-powered corded and cordless 1-1/8-inch hex breaker hammers.

Best Used For:

• Targeted Concrete Slab and Footing Demolition: Fracturing cured concrete slabs, driveways, and building footings along designated expansion joint relief lines.
• Structural Brick and Cinder Block Knockdown: Breaking through multi-wythe brick walls, structural block foundations, and mortar seams during structural remodeling.
• Floor Tile Underlayment and Thinset Scaling: Slicing beneath commercial quarry tiles, mud beds, and thick mortar layers to prepare bare subfloors.

Key Performance & Safety Features

• Precision Narrow Chisel Blade: Focused 1-1/8-inch wide edge directs pneumatic and electro-pneumatic impact energy directly into dense substrates for fast fracturing.
• Proprietary Heat-Treated Alloy Steel: Specialized heat-treatment process hardens the tool core and tip to prevent premature mushrooming, chipping, and fatigue snapping.
• Extended 20-Inch Working Reach: Provides deep penetration into thick concrete structures while reducing lower-back bending fatigue during downward floor chipping.
• Standard 1-1/8-Inch Hex Interface: Precision-machined shank with locking collar groove ensures positive mechanical engagement and maximum kinetic force transfer in heavy breaker hammers.
• High-Torque Tool Optimization: Engineered to withstand the relentless shock cycles of heavy-duty pavement breakers and industrial demolition tools.

What's Included

• (1) Diablo DMAHX118CH120 1-1/8" x 20" Hex Shank Narrow Demolition Chisel

Technical Specifications

Pro-Tip: When splitting thick concrete slabs, position the narrow chisel blade perpendicular to the edge of the fracture line and work in small bite increments of 2 to 4 inches; avoid wedging the full 20-inch steel body into a single deep crack to prevent binding.