The screwdriver bits are made of high carbon steel with a pattern engraved on the handle - and . The handle is designed with bearings; it is also flexible, easy to use and carry around. Assorted Blades - This comprehensive collection of reliable, high-quality watch screwdrivers have you ready to confidently tackle any small problem that arises. Micro-screwdrivers are available in flat and head sizes ranging from 0.6 to 2.0mm/0.02 to 0.08 inches. MULTI-PURPOSE - This jewelry screwdriver set is ideal for watchmakers, watch repairs, watch battery replacements, watch bracelet removal, eyewear repairs, jewelry work and electronics repairs, laptops, circuit boards, cameras, eyewear repairs or small electronics or object., Weight: 0.39462744898 pounds, Manufacturer: Tuidzljd