DeWalt Extreme HSS E Cobalt 29pc Set DT4957-QZ
The DeWalt Extreme HSS-E Cobalt 29-Piece Drill Bit Set (DT4957-QZ) is engineered for professionals who demand exceptional performance when drilling into tough materials. Ideal for both portable and stationary drilling, this set is designed for high alloy steels and metals with tensile strengths up to 1100 N/mm², delivering superior durability, accuracy, and reliability.
Each drill bit is made from high-speed steel with cobalt (HSS-E) for extended life and heat resistance. The no-walk tip design ensures faster starts and easier penetration, especially on curved or hard surfaces (from 5mm diameter and up), while recessed cutting wings produce cleaner, burr-free holes with minimal effort. The bits feature a three-sided non-slip shank, providing a secure grip and preventing slippage in the drill chuck—ideal for precision work, especially in freehand applications with larger diameters.
Features
- HSS-E cobalt construction for superior wear and heat resistance
- Suitable for drilling high alloy steels and metals (up to 1100 N/mm² tensile strength)
- No-walk tip for easy penetration and precise starts
- Recessed cutting wings for clean, accurate, burr-free holes
- Three-flat shank for optimal grip and spin resistance in the chuck
- Strong central core reduces breakage and enhances stability during freehand drilling
- Part Number: DT4957-QZ
Content
| (29) HSS-E Cobalt Metal Drill Bit: | 1mm, 1.5mm, 2mm, 2.5mm, 3mm, 3.2mm, 3.3mm, 3.5mm, 4mm, 4.2mm, 4.5mm, 4.8mm, 5mm, 5.5mm, 6mm, 6.5mm, 7mm, 7.5mm, 8mm, 8.5mm, 9mm, 9.5mm, 10mm, 10.5mm, 11mm, 11.5mm, 12mm, 12.5mm, 13mm |
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