1. Newly designed screwdriver headers with hardness, solid as a rock 2. Good quality and Beautiful surface color design 3. Embedded metal bearings, use more stable 4. Non-slip, silent, multi-function 5. Suitable for mobile phone, computer repair, and so on precision maintenance 6. very good handle, durable; S2 steel bit, hardness up to HRC 60, excellent process; Strength and toughness are superior to chromium molybdenum steel, which is high-end tool steel
