Drill Bit Set Irwin HSS-R DIN 338 for Metal, 10 pcs (1–10 mm) in Case

Irwin HSS-R DIN 338 drill bit set for metal, 10 pieces, covers diameters from 1 mm to 10 mm in 1 mm steps and is supplied in a compact storage case. The bits are made from high-speed steel (HSS‑R) and conform to DIN 338 geometry, intended for drilling steel and other ferrous materials. The set is suitable for use with hand drills and drill presses in workshops, maintenance and repair tasks, and general metalworking operations.

Advantages

The HSS‑R material provides good wear resistance and heat tolerance for general metal drilling. DIN 338 standard geometry ensures reliable chip removal and consistent hole quality across the size range. The included storage case keeps all 10 bits organized, protecting cutting edges during transport and storage. The 1 mm increment range from 1 to 10 mm allows selection of precise diameters for pilot holes and finishing holes without needing individual purchases.

Suitable for

• Drilling mild and low-alloy steels
• Routine maintenance and repair work
• Workshop and DIY metalworking tasks
• Use with handheld drills and bench drills

Key specifications

• Material: high-speed steel (HSS‑R)
• Standard: DIN 338 geometry
• Number of pieces: 10
• Diameter range: 1 mm to 10 mm in 1 mm increments
• Supply: plastic storage case for organized storage
• Intended materials: steel and other ferrous metals

How to use

Select the appropriate drill diameter for the required hole size and secure the workpiece with a clamp or vise. Use suitable cutting fluid when drilling steel to reduce heat and improve tool life. Start at low speed to establish the center and then increase speed according to the material and drill diameter; apply steady, moderate feed force to avoid breakage of smaller diameters. Clear chips periodically for efficient cutting and consistent hole finish.

Usage recommendations

For best results when drilling steel, use cutting fluid and matching drill speeds: higher speeds for smaller diameters, lower speeds for larger diameters. Inspect bits before use and replace any with worn or chipped cutting edges to maintain hole accuracy and operator safety.