1. Material: vanadium steel
2. Surface treatment: nickel-chromium plating
3. Slotting width: 7/17mm
4. The inner diameter of the sleeve: about 22 mm
5. Size: about 90x32 mm
6. Weight: about 300g/piece
7. Scope of application: car repair
8. Features: beautiful and practical, high temperature quenching, not easy to rust, durable, high hardness, high torque, good toughness