1. Material: vanadium steel
2. Standard: formula
3. Size: about 25x12x4.5 cm/set
4. Weight: about 843g/set
5. Scope of application: auto repair and mechanical repair
6. Features: beautiful and practical, not easy to rust, durable, high hardness, large torque, good toughness, wide applicability
7. Description: use with 3/8 inch wrench
8. Contains: one long sleeve, one short sleeve and one small open sleeve