3pcs metric hexagonal handle pagoda drill bit, metal drilling bit, titanium plated high speed steel step drill bit

Name: Metric Titanium Plated High Speed Steel Step Drill Small 3PC Set (Hexagonal Handle)

Material: High speed steel 4241 (suitable for workpieces with a hardness below 25, such as thin iron plates, insulation boards, and wooden boards)

Specifications:

4-20:9 steps 4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm

3-12:10 steps: 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm

4-12:5 steps: 4mm, 6mm, 8mm, 10mm, 12mm

Surface treatment: Titanium plating