When you get a small set of drill bits， it is also common to lose or break one or two. And it might be a trouble when you need one of the missing drill. Well， this flock of drill bits has more duplicates in one sizes， no more worrying of the missing drill bits. Besides， it comes with a blow molding storage case， which is convenient to carry.<br><br><strong>Features:</strong><br>High-speed steel， high quality.<br>High hardness， performed well in cutting and drilling.<br>Excellent workmanship， stable performance and durable.<br>Suitable for drilling hole of the thin plate， wood or plastic that in low hardness.<br>It includes 150 sizes(0.4-3.2mm) in one drill bit set， which meet your different needs perfectly.<br>Comes with a high quality blow molding storage box， twist drills in every sizes have their own slot.<br><br><strong>Twist Drill Model:</strong><br>0.4mm， 0.5mm， 0.6mm， 0.7mm， 0.8mm， 0.9mm 10 pcs of each<br>1.0mm， 1.1mm， 1.2mm， 1.3mm， 1.4mm， 1.5mm， 1.6mm， 1.8mm， 2.0mm，<br>2.1mm， 2.2mm， 2.3mm， 2.4mm， 2.5mm， 2.6mm， 2.8mm， 3.0mm， 3.2mm 5pcs of each<br><br><strong>Specifications:</strong><br>Material: High-speed steel<br>Package Weight: Approx. 303g / 10.69oz<br>Package Size: Approx. 20 * 15 * 3.5cm / 7.87 * 5.91 * 1.38in<br><br><strong>Package List:</strong><br>150 * Twist Drill<br><br><strong>Note:</strong><br>This twist drill bits are not suitable for high hardness materials(such as stainless steel).