A premium shaft that won't break while maintaining its beautiful appearance and improving the disadvantages of the resin shaft. By incorporating a metal core in the middle of the shaft, it achieves both the lightness of the resin shaft and the durability of the metal shaft. Includes a set of "Premium Champagne Ring" which creates excellent holding power when using L-Flight and "GOMU" which prevents the shank from coming loose as a mark of confidence that it won't break. Even in the current environment where the weight of the barrel has increased, the L-SHaft, which offers the strength of never breaking when playing darts, is finally completed.