YT-44731 Step drill bit set 3-20 mm, 3 pcs

Designed for drilling high-quality stainless steel, structural and cold-rolled steel, non-ferrous metals, steel sheets, plastics

• made from high-speed steel HSS 4241, coated with titanium nitride, which increases drill life
• edges of the drilled hole remain clean and free of burrs
• self-centre on rounded and slippery surfaces
• fast heat dissipation when drilling hard materials
• 2 spiral flutes effectively remove dirt

Contents:
• drill 3-12 mm, steps: 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 mm
• drill 4-12 mm, sizes: 4, 6, 8, 10, 12 mm
• drill 4-20 mm, steps: 4, 6, 8, 10, 12, 14, 16, 18, 20 mm