Cryogenic tempering is a process used to improve the molecular structure of steel which in turn reduces stress and improves strength and wear resistance. It is used in many disciplines with Formula 1 engine parts being a classic example.
Bench tests on initial samples proved to us that the new tempering processes combined with improved designs and heavy forging resulted in hooks that were 25-30% stronger than other PTFE coated carp hooks in the same wire gauge. We subsequently sent the hooks for independent scientific testing on hardness and tensile strength and the tests carried out confirmed and supported our initial findings.
So rather than having to improve strength by simply increasing wire gauge, new manufacturing processes have allowed us to maintain optimum wire gauges for each size which allow for fine, ultra-sharp needle points which are now more durable than ever.