Profile: Numa is a designer and manufacturer of down hole hammers and bits for land & marine drilling sites. We provide large diameter hammers that capable of drilling holes up to 43" (1092 mm). We also produce reverse circulation and horizontal application hammers & bits. We serve construction, mining, oil & gas, quarry and water well industries. We provide Patriot®, Champion® and Challenger® hammer models that are able to drill holes from 3-1/2" to 43" in diameter.