Drilling through metals and hard plastics is a cinch with this 19-piece drill bit set from Bosch. The components in this kit are made from robust high-speed steel, so they have the mettle to bore through tough materials like grey cast iron without breaking stride. As the bits range in size from 1mm to 10mm, you can pick the exact piece you need for the job. They're supplied in a metal storage case that keeps them safe and organised.

• Light total weight of 660g makes it easy to handle
• Storage box has compact dimensions of 170 (H) x 110 (W) x 35mm (D) to fit in your toolbox
• Bit sizes are clearly labelled in the case for ease of identification

• Construction sector
• Plumbing industry
• DIY jobs

It's a good idea to use a coolant when drilling. The pressure between a spinning drill bit and metal causes a high level of friction, so heat builds up quickly as you work. Using a coolant keeps the temperature down, which helps to extend the life of your tools.

Drill Bits & HSS/Masonry Sets

Metalworking drills.