The Buck 753 RedPoint Rescue is one of the most interesting developments in the world of pocket knives, where opening and locking are concerned. The Safespin-system is operated with a button on the side, which you have to press to unlock the knife for opening. Then, you can open the knife with a simple hand movement, or use the ridges arround the hinge point to unfold the blade with your finger. When the knife is completely opened, the button on the side clicks, locking the blade in the open position.