[24 Sizes Meet Various Needs] This micro drill bit set has 150pcs drill bits with 24 different sizes, including 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm; 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 , 3.2 mm. [Rust-proof Durable Material] Made of high speed steel, these mini twist bits are resistant to oxidation. With anti-corrosion, these HSS twist drill bits are durable and have a long service time. [Wide Application] Suitable for wood, resin, jewelry, nuts, amber, beeswax, olives, pearls, PVC, acrylic and plastic, etc. [PortableConvenient to Store] These micro precision twist drill bits can be stored in one box, and there're several separate grids organizing different size bits. With this box, it's easy for you to carry these mini drill bits anywhere. [Easy to Identify] The sizes of woodworking bits are shown on the box surface at the corresponding position, so it's easy for you to pick out the one you need quickly. Specification Material: HSS high speed steel Quality: 150pcs coloras show Package List 10pcs x 0.4 mm twist drill bit /10pcs x 0.5 mm twist drill bit /10pcs x 0.6 mm twist drill bit 10pcs x 0.7 mm twist drill bit /10pcs x 0.8 mm twist drill bit /10pcs x 0.9 mm twist drill bit 5pcs x 1.0 mm twist drill bit /5pcs x 1.1 mm twist drill bit /5pcs x 1.2 mm twist drill bit 5pcs x 1.3 mm twist drill bit/5pcs x 1.4 mm twist drill bit /5pcs x 1.5 mm twist drill bit 5pcs x 1.6 mm twist drill bit /5pcs x 1.8 mm twist drill bit /5pcs x 2.0 mm twist drill bit 5pcs x 2.1 mm twist drill bit /5pcs x 2.2 mm twist drill bit /5pcs x 2.3 mm twist drill bit 5pcs x 2.4 mm twist drill bit /5pcs x 2.5 mm twist drill bit /5pcs x 2.6 mm twist drill bit 5pcs x 2.8 mm twist drill bit /5pcs x 3.0 mm twist drill bit /5pcs x 3.2 mm twist drill bit 1piece x Plastic box