High-speed steel, high quality. High hardness, performed well in cutting and drilling. Excellent workmanship, stable performance and durable. Suitable for drilling hole of the thin plate, wood or plastic that in low hardness. It includes 150 sizes(0.4-3.2mm) in one drill bit set, which meet your different needs perfectly. Comes with a high quality blow molding storage box, twist drills in every sizes have their own slot.
Twist Drill Model: 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm 10 pcs of each 1.0mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.8mm, 2.0mm, 2.1mm, 2.2mm, 2.3mm, 2.4mm, 2.5mm, 2.6mm, 2.8mm, 3.0mm, 3.2mm 5pcs of each