Drill bit set AWTools AW42090 — pack of 5, twist drill bits for metal and wood

The AWTools AW42090 drill bit set includes five precision twist drill bits designed for general drilling in metal and wood. Manufactured from HSS-Co high-speed steel with 5% cobalt, these bits offer increased heat resistance and prolonged cutting life compared with standard HSS. Each bit is precision ground with two cutting edges and a 135° centering point angle to improve stability and reduce walking when starting holes. The set is supplied in a compact case for convenient storage and transport.

Advantages

These twist drill bits combine cobalt-alloyed high-speed steel and precision grinding to provide consistent performance when drilling alloyed and unalloyed steels, grey cast iron, non-ferrous metals and plastics. The 135° centering point improves hole accuracy and reduces the need for pilot drilling, while the two-cutting-edge geometry ensures efficient chip removal and stable cutting. The included case keeps the five pieces organized and protected between uses.

Suitable for

• Drilling holes in alloyed and unalloyed steel
• Working with grey cast iron and non-ferrous metals
• General carpentry and drilling in wood
• Plastic components and light workshop tasks
• Hand drills and drill drivers for renovation and DIY jobs

Key specifications

• Material: HSS-Co (high-speed steel with 5% cobalt)
• Tip geometry: 135° centering point
• Cutting edges: precision ground, two-cutting-edge design
• Applications: alloyed and unalloyed steel, grey cast iron, non-ferrous metals, plastics, wood
• Package contents: 5 twist drill bits in a storage case

How to use

Select the appropriate drill bit size for the required hole diameter and secure it in a compatible hand drill or drill driver. Start drilling at low speed to engage the 135° centering point and establish the hole, then increase speed according to material and bit size while applying steady, moderate pressure. Use cutting fluid or coolant when drilling steels and other metallic materials to reduce heat and extend bit life. After use, clean chips from the flutes and return the bits to the case to prevent damage and corrosion.

Usage recommendations

When drilling metals, use appropriate cutting lubricant and moderate feed to prevent overheating. For precise starts in thin or smooth materials, consider a small pilot mark or centre punch before drilling. Store the bits dry in their case to maintain cutting performance.