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