Name: Titanium-plated spiral  step drill 4PC set

Product size, 15 * 14 * 4cm

Material: High-speed steel 4241 (suitable for workpieces with a hardness below 25 °, such as carbon steel)

specification:

4-32mm (4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32mm) 6.35mm handle

4-20mm (4, 6, 8, 10, 12, 14, 16, 18, 20mm) 6.35mm handle

4-12mm (4, 5, 6, 7, 8, 9, 10, 11, 12) 6.35mm handle

3-12mm (3,4,5,6,7,8,9,10,12) 6.35mm handle

Packaging: aluminum box

Cutting materials: thin iron plate, aluminum material, insulation plate, PVC plate, wood thickness within 5mm. A single drill can be used to make holes of various specifications.