ROCKMORE DTH (Down-the-Hole) Drilling Tools -
Numa offers the largest range of conventional down hole hammers and down hole hammer bits available in the deep hole drilling industry today. Unmatched in longevity, penetration rates, and blast hole drilling, these performance driven Patriot®, DCS®, Champion® and Challenger® hammer models are able to drill holes from 3-1/2″ to 50-1/2″ (89 – 1283 mm) in diameter.
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