A genuine Honey Badger replacement stop pin for medium liner-lock Honey Badger knives. The stop pin is the small steel cylinder between the liners that the blade rests against when it is fully open, so it sets the open position of the blade and takes the load when you cut. If the pin has been lost while stripping the knife, or is worn or damaged, the blade will not sit correctly, and this part puts it back to factory spec. It is a plain, machined metal pin sized for the medium frame; Honey Badger makes it in large, medium and small, so choose the one that matches your knife. Fitting means opening the handle with the T6/T8 Torx key that comes with the knife.