If you have the newer ones made by Victory, I believe the Firenock F and M model fits the .300 ID shaft. If your bow is a Tenpoint, they recommend Omni Nocks which Firenock does not offer. With that said, it is generally safe to shoot half moon style nocks out of TenPoints, which is the M style. Never shoot a flat style nock out of a Ten Point.Thanks for the info. Do you know which Firenock model fits the TenPoint Pro Elite arrow?