Irwin HSS metal drill bit set cylindrical 19 sizes 1.5–10 mm (10502502)

Irwin HSS metal drill bit set cylindrical 19 sizes 1.5–10 mm is a collection of high-speed steel twist drills designed for drilling steel and other ferrous and non-ferrous metals. The set contains 19 metric sizes from 1.5 mm to 10 mm, covering common diameters used in maintenance, fabrication and workshop work. Cylindrical shanks make these bits compatible with standard chucks in hand drills and drill presses, providing straightforward fitting and secure clamping for general metal drilling tasks.

Advantages

The high-speed steel composition offers good hardness and heat resistance for extended cutting life when drilling metal. Cylindrical shanks ensure compatibility with a wide range of drill chucks and support accurate centering and stable rotation. The set format supplies a broad range of diameters in one container, reducing the need to source individual sizes for typical workshop applications. The twist-flute geometry promotes chip removal and helps maintain consistent drilling performance across sizes.

Suitable for

• Drilling holes in mild steel, stainless steel, aluminium and other non-ferrous metals
• General maintenance and repair work
• Fabrication, metalworking and prototyping in workshops
• Use with hand drills and drill presses for precision drilling

Key specifications

• Material: high-speed steel (HSS)
• Shank type: cylindrical (straight) shank for standard chucks
• Diameter range: 1.5 mm to 10 mm, 19 sizes total
• Geometry: twist/fluted design for chip evacuation
• Intended use: metal drilling (ferrous and non-ferrous)

How to use

Secure the chosen drill bit in the chuck of a hand drill or drill press and tighten firmly. Select appropriate spindle speed and feed for the workpiece material—slower speeds for harder metals, higher speeds for softer metals such as aluminium. Where practical, mark the drilling position and use a centre punch to prevent walking. Apply steady, moderate pressure and allow the drill bit to cut without forcing; withdraw occasionally to clear chips and reduce heat buildup. Use cutting lubricant when drilling harder steels to extend bit life and improve hole quality.

Usage recommendations

For best results when drilling metal, use proper cutting fluid, maintain correct spindle speeds, and avoid excessive side load. Store the set in its original case to protect edges and keep sizes organised.