Powered by a 440-horsepower Tier III Cat engine, DCR20 down-the-hole drills have been used in soft, medium and hard rock conditions providing deep holes from 3.5 to 6.5 inches in diameter. Servicing the drill is made easy with access to all key components--including the engine, fluid levels and compressor--through large panel doors located at ground level. The 51-inch-wide cabs have been redesigned to give operators maximum comfort with single-lever drilling controls, large gauges, air conditioning, and excellent views of the drilling operation.