The conical drills are graduated every 2 mm, ranging in size from 4 mm to 32 mm. They are made from HSS 4341 and include:

• 1 drill 4-12mm with Φ 6mm
• 1 drill 4-20mm with Φ 8mm
• 1 drill 4-32mm with Φ 10mm
• 3 drills for metal: 3mm, 6mm, 8mm

They come in a plastic case and weigh 0.14 Kg.

They are suitable for professional and industrial use.