Related Directories

• Numa Hammers & Bits

  For forty years, Numa has built a strong legacy of high quality, Made in the USA rock drilling hammers, bits, and accessories for drilling DTH, HDD, and reverse circulation holes 3½ to 50½ inches (89 - 1283 mm) in diameter. Our long history of innovation and expertise has resulted in a wide range of reliable DTH and HDD products perfectly suited for hard rock, overburden, or loose strata formations. Numa provides some of the industry's top rock drilling experts providing a wide array of insight on drilling methods, tooling, fluids, bits, reamers, rock tools, swivels, and more.

• Drill King International

  Drill King International is one of the largest ISO 9001:2015 certified Manufacturers in the USA for DTH hammers, bits, Shock Subs, Hole Openers, Casing Advance Systems, Wai fluid hammer, RC hammers and bits, and many other down the hole tools.

• Center Rock Inc.

  Center Rock manufactures a full line of DTH hammers & bits from 3.5" (89mm) to 48" (1219mm), ROTO LOC overburden drilling systems, and LP Canister Drills from 18" (457mm) to 144" (3658mm). We also build mobile workshops and manufacture custom drill strings; all backed by factory-trained technicians and product support specialists.