Technical info:
- Shaft hardness: 45 – 46 Rockwell
- Wing hardness: 50 – 52 Rockwell
- Pin hardness: 50 Rockwell
- Sharks fins are welded in a way that the shaft does not heat up so much and reduced its hardness.
- All shafts pass through heat treatment and the metal acquires high hardness, durability and reset memory.
- At the Medium and Large Shark fins the 2 holes are at the second shark fin and at the end of the shaft.
- At the Small Shark fins the hole is at the end of the shaft.
