1. Size: 5.5"(135mm)
2. Material: Upper blade: 55# carbon steel
Lower blade: 55#carbon steel
Pivot bolt: 35# carbon steel
3. Heat-treatment: By advanced continuous mesh belt temper machines, whole-piece heat treatment with hardness:
Upper blade: 52-54HRC
Lower blade: 52-54HRC
Pivot bolt: 28-32HRC
4. Surface finish: fully polished
5. Handle: soft dipped handle