Victory Standard Insert Aluminum 12 pk.. These Arrowheads by Victory are the same quality that are used in factory three-bladed shafts. So for avid cannon ballers you know what it is to have a standard insert. Put one in your cannon and you'll know what it feels like to have a three-bladed shaft with a one-piece cannonball center. It's the same principle as a three-bladed arrow with a one-piece center and nock. But the difference is these two components don't work together. One-piece arrows turn into three-bladed arrows when you add a field point and insert the resulting kinetic energy into the tip of the arrow. Don't forget to grab a Victory Arrow Insert for your next archery project. Package Contents: Victory Standard Insert Victory ACI245-12: Standard Insert Aluminum 12 pk.