Specifications: 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 fast. 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", 1.9mm/0.07", 2.0mm/0.08", 2.1mm/0.08", 2.2mm/0.09", 2.3mm/0.09", 2.4mm/0.09", 2.5mm/0.10", 2.6mm/0.10", 2.7mm/0.11", 2.8mm/0.11", 2.9mm/0.11", 3.0mm/0.12" (Approx.) Notes: Due to the light and screen setting difference, the items color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 10 x Twist Drill Bits 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 fast. High quality and extra long life.