The DEWALT EXTREME® SDS-max Drill Bit is engineered for demanding drilling in reinforced concrete, masonry, and stone. It features a 2-cutter carbide head design (two main cutters with two additional tips), ensuring improved hole roundness, enhanced stability, and better anchor retention.
With a 22 mm diameter, 400 mm working length, and 540 mm total length, the bit is suitable for deep and precise drilling applications. The optimized flute geometry combined with an elongated helix enables efficient debris evacuation, maintaining consistent drilling speed and reducing clogging.
A reinforced core structure increases strength and minimizes the risk of breakage, while maximizing energy transfer from the rotary hammer to the cutting head for improved performance. Certified by PGM (Prüfgemeinschaft Mauerbohrer), this drill bit meets strict standards for hole accuracy, making it ideal for professional construction, anchoring, and installation work.
TECHNICAL DETAILS:
| Specification | Details |
| Product Name | EXTREME® SDS-plus Drill Bit |
| Brand | DEWALT |
| Model | DT9420-QZ |
| Diameter | 22 mm |
| Working Length | 400 mm |
| Overall Length | 540 mm |
| Shank Type | SDS-plus |
| Head Type | Carbide Tooth |
| Flute Type | 4-Cutter Helix |
| Geometry | Solid 2-cutter + 2 tips (4-cutter) |
| Certification | PGM certified for hole accuracy |
| Applications | Masonry, reinforced concrete, natural & artificial stone |
| Product Weight | 0.858 kg |
| Packaging | Hang Tag |
| Features | Optimized flute design, reinforced core, efficient debris removal, concentric drilling holes |
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