Infinity Tool Mfg. is one of the leading ISO9001:2008 accredited U.S. manufacturers of DTH hammer bits, patented bit retention systems and horizontal directional drilling.  The company is also a provider of oil hammers, gas hammers and more. DTH bits are available in a wide range of sizes, from 2 to 32 inches, in four different face shapes and a variety of industry shanks. They are backed by the Infinity Tool Mfg. team, which has a combined 150 years of experience and knowledge in the drilling