Ghost XV strings & cables are a GAS Bowstrings exclusive, delivering the ultimate balance of speed and stability. Ghost XV material is a premium blend of the finest BCY materials available, to provide unbeatable performance when combined with our TTS process. Ghost XV strings & cables come in Ghost white, but end servings are available in your choice of any available colors. Powergrip center serving is standard on all Ghost XV strings. All Ghost XV strings come with speed nocks installed to factory locations on applicable bows.