Developed utilizing many years of field experience. Summit Series DTH Hammers are specially designed and engineered to suit and optimize the performance of casing advancing systems such as Robit, Symmetrix, Stratex, Odex etc. They offer superior performance, reliability and durability in the toughest ground conditions, and deliver the optimum cost per meter for any DTH application. Available in a wide range from 2 to 34 inches in order to meet all your DTH hammer needs