Check the listing for details. Pin Hand Drill & Mini Twist Drill Bit Set 40 Pcs Micro Drill Bit Set for Jewelry. Color: Multicolor, Condition: New. Listed at 13.48 USD. Features: 100% brand new and high quality. It is HSS Micro-Drill bits set. Applicable for woodworking, family standing, electronic repairing parts, wood products, plastic products, circuit boards, etc. Sharp blades, small drilling resistance, chip removing smoothly, long life. Note:Never for metal drilling. Specifications: Material: HSS high-speed steel 4241 Crafts: grinding Shank Diameter: 0.3mm 0.35mm 0.4mm 0.45mm 0.5mm 0.55mm 0.6mm 0.65mm 0.7mm 0.75mm 0.8mm 0.85mm 0.9mm 0.95mm 1.0mm 1.2mm 1.3mm 1.4mm 1.5mm 1.6mm Package Included: 20pcs HSS Micro-Drill Bits Set Features: 100% brand new and high quality. Full metal. Self-driven turbine, hand drill automatic, accurate and efficient. High-precision, double-chuck, it can clip the drill of 0.2~2.0mm. Hand-pressure rotary drilling, time-saving, convenient and quickly. It can drill on the amber, beeswax, wood, plastic, walnut, rubber, and other materials. Operating skills: Positioning firstly when punch for smooth objects. When punch for the harder objects, make a hole with a small dril firstly, then expanded it to a larger hole. It is normal if it is a little tight when matchs with 2.0 grill, just force open the chunk a little. Note: Wearing protective tools when use it and pay attention to the emergency situation. Please keep the exertion directions are always perpendicular, or the drill bit is easy to be broken. This product is not suitable for drilling on agate, jade, metal, steel and other hard materials, slip or unusable may happen. Specifications: Structure: the body is steel, the chuck is alloy metal, the main stem is spiral and equipped with backspring. Color: Silver Length: 11cm Chuck clamping range: 0.2-2.0mm Use shank typer: round handle The shape of the drill shank: round only Package Included: 1pcs Hand twist push drill with 2pcs chuck