Hexagon Shank Straight Groove Step Drill Pagoda Drill Step High Speed Steel 4241 Drill Bit Set 4-32 4-20 4-12

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

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

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

4-12mm (4, 6, 8, 10, 12mm) 6.35mm shank

Surface treatment: Titanium plating

Weight: 220g/set

Packing: OPP