Description: 【Comprehensive set】: This micro screw extractor set includes 1 small hand drill, 40 bits, and 1 replacement bill to meet all your drilling needs 【Quality material】: The mini portable hand drill is made from quality aluminum alloy while the bits are crafted from quality steel, ensuring durability, resistance to wear and deformation for long term repeated use 【Wide range of bits】: The bits tool set includes sizes ranging from 0.3 mm to 1.6 mm, catering to your diverse drilling requirements 【Versatile use】: This small hand drill tools set features a multifunctional design that can be used for drilling in materials like wood, rubber, silicone, resin, etc., but is not suitable for hard materials like steel or iron 【Broad application】: Ideal for home use, professionals or DIY craft enthusiasts and beginners alike will find this twist drill extremely useful and convenient for their projects Specification: Material: Aluminum Alloy and Steel Size Chart: Hand Drill Length 10.5cm/4.13inch Package Includes: 1 Hand Drill, 40 Bits, 1 Replacement Drill Note: Please allow slightly errors 1-2cm differences due to manual measurement.