• Set of 30 precision drill bits for manual hand drill, with sizes from 0.5 to 3.0 mm • Sharp head design that facilitates centering and improves handling, allowing for faster work with less effort • Made of aluminum alloy, ensuring durability and strength • The precision chuck can hold small drills, wires, reamers, and other manual drilling tools • Suitable for working with materials such as wood, resin, jewelry, walnut, amber, beeswax, olive, beads, PVC, acrylic, and plastic • Includes 3-jaw steel chuck with a capacity of 0.2 to 3.4 mm (1/64 to 9/64 inches) • Useful tool for electronic assembly, tool making, and model building