1. Material: chrome molybdenum steel
2. Weight: about 600g/set
3. Size: about 142x105x38mm/set
4. Purpose: nut screw screw extractor
5. Process: heat treatment
6. Features: the material is firm and not easy to deform, good toughness, high hardness, easy to use, time-saving and labor-saving operation, complete specifications, wide applicability, wear-resistant and anti-rust
7. Contains: 10 sleeves (9/10/11/12/13/14/15/16/17/19mm); 1 long rod (7x90mm)