-Longevity by design. -Nitinol drawn-wire nickel-titanium is superior to stainless steel or laser-cut, solid NiTi. -NiTin starts stronger and stays stronger. -Peek (polyether ether ketone) super-polymer reinforcement reduces ring stretch. -Optimized tip geometry for adaptation and control. -Anatomically shaped tips reduce flash. -Super strong peek tips grip the infrabulge and are 48% harder to pop off than the other guys. -Won’t collapse bands on wider preps. **For further product information, please contact Chat Support**