Features: Straight round shank. Drill hole quickly and nicely. High-speed steel, high quality with good durability. Suitable for wood, plank, plastic, aluminium plate or sheet iron. It includes 13 sizes in one drill bit set(1.5mm, 2mm, 2.5mm, 3mm, 3.2mm, 3.5mm, 4mm, 4.5mm, 4.8mm, 5mm, 5.5mm, 6mm, 6.5mm), which meet your different needs perfectly.
