【High Quality Material】-HSS twist drill bits are made of HSS high speed steel, oxidation resistant, corrosion resistant, strong and durable.【Various Sizes】-10 of each for 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 3.2mm each. 【Meets Your Use】-150pcs Professional Wood Twist Drill Bit Set Kit, 24 different sizes to meet your needs. 【Metal Drill Bit Kit with Storage Box】-The new plastic box is beautiful, easy to carry, and the box is not easy to damage and keep clean and tidy. 【Widely Used】-Wide range of applications for wood, resin, jewelry, nuts, amber, beeswax, olive, pearl, PVC, etc. acrylic and plastic, etc., as woodworking tools, wood drill bits, twist drill sets, drill bit sets, metal drill bits, metal drill bits.