1 Type:BT&DIN&ISO&CT40&MAS&JIS&DIS Made from 40Cr hardened to 44-48HRC.
2. Costly heat treatment in several steps
3. Spots with highest stress tempered specifically
4. High impact strength
5. Precision can reach 0.015mm
6. Highest security and reliability
7 Suit for mill chuck holder
8. All critical pull stud surfaces precision ground.