Fits all Integy, Hudy, OFNA, Corally style truers. The Final Cut tire truing bit is a super hard tungsten carbide cutting bit with sharp, super hard teeth. The Final Cut remains sharp cut after cut. The finish on the foam after truing is absolutely smooth and ready to race. Because it cuts so cleanly and aggressively, the Final Cut truing bit reduces the load on the truer motor by removing material rather than pushing it around.