Our goal in the development of CoroChuck 930 was to create a high quality chuck with the best pullout security and precision. We realized that secure clamping is not just about higher clamping force,it's about clamping the tool in the right way. Which is why we developed Fulcrum Technology. The thin clamping membrane expands to create two distinct clamping points,giving the best possible pullout resistance and dampening performance. The fourth toll toll okay toll concretely bug Levine Youtube VOR Thank you.