The Devastators line is made from 95% virgin tungsten which allows for an extremely slim and short barrel for its weight. The 'Edge Grip' Devastator Hammer Head employs many parallel ridges to create a unique non-slip grip that is neither too coarse nor too smooth. Deluxe 'Croco' case includes extra logo flights, aluminum shafts and our Hammer Head wrench with Key Ring Hole. Hammerhead is proud of the fact that these darts are manufactured in the U.S.A. at their plant in Santa Maria, California.