28 styles for your choosing. Tiny HSS drill bits, offer the best heat resistance and good performance for drilling. Good toughness, wear resistance, strong drilling capacity. Full grinding, drilling f more→ast. High quality and extra long life. 10 drill bits stored in sealed package with good protection. Application: suitable to drilling iron, steel, aluminum, plastic, wood and other. Suitable for a small object processing. Type: Twist Drill Bit Quantity: 10 Pcs/Set(Same Size) Material: HSS Size: 0.3mm/0.01", 0.4mm/0.02", 0.5mm/0.02", 0.6mm/0.02", 0.7mm/0.03", 0.8mm/0.03", 0.9mm/0.04", 1.0mm/0.04", 1.1mm/0.04", 1.2mm/0.05", 1.3mm/0.05", 1.4mm/0.06", 1.5mm/0.06", 1.6mm/0.06", 1.7mm/0.07", 1.8mm/0.07",…