Excalibur Crossbow Utility Pack (Ex-Wax, X-Slick & Ex-Oil)Excaliburs UTILITY PACK gives you everything you need to properly maintain your crossbow so it can give you its peak performance EX WAX Apply to string serving for longer life Our Serving Wax will dramatically increase string life by reducing the friction created when firing your crossbow. Comes in a handy resealable container. X SLICK Apply to the deck rail to reduce friction and prolong string life The new X Slick Rail Lubricant is a silicon based