The Mission F-Lock Pro Flight Punch is a superior punch that can be used as part of our F-Lock flight and ring system, as well as being compatible with all standard rings and springs. Simply punch the hole in your flights and slip the F-Lock ring or spring into the hole and attach the flight to your GripLock shaft. This creates an ultra strong grip that keeps the flight firmly in place. The punch has been ergonomically designed for a comfortable grip.