Drill bit set Irwin HSS PRO IW3031501, 15 pcs, sizes 1.5–10 mm

Set of 15 Irwin HSS PRO drill bits covering diameters from 1.5 mm to 10 mm, designed for general workshop and DIY tasks. The bits are manufactured from high-speed steel (HSS) to provide durability and cutting performance across common materials such as metal, wood and plastics. This set includes a graduated range of small to medium sizes, enabling precise hole-making for fasteners, fittings and light fabrication work in home and professional settings.

Advantages

Irwin HSS PRO bits combine the hardness and heat resistance of high-speed steel with precise ground tips for consistent centring and reduced walking. The selection of 15 sizes gives flexibility for a wide range of applications, while the HSS material delivers good wear resistance during repeated use. The bits are suitable for conventional drill chucks and are produced to tight diameter tolerances to ensure accurate hole sizes.

Suitable for

• Drilling through mild steel, aluminium and other non-hardened metals
• Making precise holes in wood for dowels, screws and fittings
• Creating openings in plastics and composite materials
• General workshop, maintenance and DIY repair tasks

Key specifications

• Material: High-speed steel (HSS)
• Number of pieces: 15
• Diameter range: 1.5 mm to 10 mm
• Tip type: Ground point for accurate centring
• Compatibility: Standard drill chucks

How to use

Select the appropriate diameter for the required hole and secure the bit in a chuck with sufficient clamping length. Use a steady feed and appropriate spindle speed: lower speeds for harder metals and higher speeds for wood and plastics. Apply cutting fluid or lubricant when drilling metals to improve tool life and reduce heat buildup. Back the bit out periodically to clear chips when drilling deeper holes and ensure stable workpiece clamping to avoid walking or chattering.

Usage recommendations

For best results when drilling metals, start with a small pilot hole before stepping up to the final diameter, and use cutting oil to extend the life of the HSS bit. When working with plastics, use slower speeds and minimal pressure to prevent melting or chipping. Store the set in a protective case and inspect bits for wear or damage before reuse.