Specifications: 1) Made from super micro-grain tungsten carbide tips 2) 14-36mm and 25/50mm Specifications:1) Made from super micro-grain tungsten carbide tips2) 14-36mm and 25/50mm cutting depths3) Superior-design geometry for rails4) For drilling holes into rails, suitable for all types of aril drills e.g. Cember, Erico, Trak-star, Rotabroach, Rotamag, etc.Outer packing Standard export packing