GOG Freak Paintball System is one of the premier barrel systems in the industry. The Bore Master Insert Kit comes with all the inserts listed below in Stainless Steel. This complete bore kit adjusts from .679" - .695" using the supplied barrel inserts. You get eight inserts in this kit. If you do not already have the Freak back or Freak front you will need those before using this kit. This is only the insert kit NOT a complete barrel. Carry case is included as pictured.