DEWALT Extreme SDS Max 4-Cutter Heavy-Duty Hammer Drill Bit Family (18mm to 45mm) for Reinforced Concrete & Masonry - DT9412-QZ to DT9448-QZ
Up to Rs 750.00 OFF
Up to Rs 7,000.00 OFF
Up to Rs 16,000.00 OFF
Rs 20,000.00 OFF
| Feature | Details |
| Brand | DEWALT |
| Series / Platform | Extreme SDS Max 4-Cutter Series |
| Available Diameters | 18 mm (DT9412-QZ), 25 mm (DT9425-QZ), 40 mm (DT9445-QZ), 45 mm (DT9448-QZ) |
| Length Options (Total / Working) | 540 mm / 400 mm (18 mm & 25 mm); 570 mm / 450 mm (40 mm & 45 mm) |
| Cutter Head Design | 4-Cutter Solid Carbide Geometry (Central tip flanked by 2 lateral wings) |
| Body / Core Design | Maximized Central Core for High Impact Energy Transmission |
| Flute Geometry | High-Capacity 4-Flute Spiral with Wide Entry |
| Shank Type | Standard SDS Max (18 mm Drive Shank) |
| Machine Compatibility | SDS Max Rotary Hammers & Demolition Combination Drills |
| Target Substrates | Reinforced Concrete, Bedrock, Natural Stone, Solid Brick & Hard Masonry |
| Primary Applications | Heavy Structural Anchors, Chemical Rebar Doweling, Utility Pipe Pass-Throughs & Foundation Fixings |
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4-Cutter Solid Carbide Head Architecture: Central solid carbide tip flanked by dual lateral cutting teeth drills perfectly concentric holes, preventing bit jamming and tooth breakage when hitting embedded structural rebar.
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Maximized Central Steel Core: Reinforced core geometry transfers high electro-pneumatic impact energy directly to the bit head, minimizing kinetic loss and shaft vibration.
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High-Speed 4-Flute Debris Spiral: Optimized helix design with enlarged flute entries rapidly clears abrasive rock dust and concrete slurry, preventing thermal binding in deep holes.
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Standard 18 mm SDS Max Drive Shank: Engineered for heavy-duty rotary combination hammers, providing positive, slip-free torque transfer under extreme mechanical load.
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Heavy Diameter & Deep Penetration Capacity: Delivers large-diameter boring from 18 mm to 45 mm with working lengths up to 450 mm, ideal for heavy foundation anchors, seismic dowels, and utility pipe sleeves across Nepal.
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