Drill bit set Irwin IW2026501 — HSS for concrete and metal, 9 pcs: 3, 4×2, 5×2, 6×2, 8×2 mm in case

Irwin IW2026501 is a 9-piece HSS drill bit set designed for drilling in concrete and metal. The set contains one 3 mm bit and pairs of 4 mm, 5 mm, 6 mm and 8 mm bits, presented in a compact storage case for organized transport and quick access. The bits are made of high speed steel (HSS) suitable for a wide range of general construction, repair and maintenance tasks and fit standard drill chucks for use with both manual and cordless drills.

Advantages

The HSS material provides a balance of hardness and toughness for drilling into metal and masonry surfaces while maintaining edge retention. Having duplicate sizes for common diameters reduces downtime when a bit becomes dull or breaks. The compact case keeps bits protected and sorted, simplifying selection on the job. Compatibility with standard chucks allows use across hand-held and cordless drills without special adapters.

Suitable for

• General construction drilling in metal and light concrete
• Maintenance and repair tasks requiring multiple diameters
• Workshop and site work with hand-held and cordless drills
• Home DIY projects involving metal brackets, fixtures and light masonry

Key specifications

• Material: High speed steel (HSS)
• Number of pieces: 9
• Included diameters: 3 mm; 4 mm (×2); 5 mm (×2); 6 mm (×2); 8 mm (×2)
• Storage: Compact protective case
• Compatibility: Fits standard drill chucks for manual and cordless drills

How to use

Select the required diameter from the case and secure the bit in the drill chuck, tightening according to the drill manufacturer's instructions. For drilling metal, use a moderate feed pressure and appropriate rotational speed for the bit diameter and material. For concrete or masonry, start with a slow pilot run and increase speed as needed; if drilling harder concrete, consider using a hammer function or masonry-specific bit. Apply cutting lubricant when drilling metals to reduce heat and extend bit life, and clear chips regularly to maintain cutting efficiency.

Usage recommendations

Wear eye protection and appropriate gloves during use. For prolonged metal drilling, use cutting fluid and moderate speed to avoid overheating. Replace worn bits from the set as needed; keep the case closed when not in use to protect bit tips and ensure accurate selection on future jobs.