KKmoon 13pcs/set HSS Plating Titanium Twist Drill Bit Set Metric System 1.5-6.5mm Woodworking Wood Metal Drilling Tool 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.