The RH15 drill head offers proven reliability and ease of use with a single, solid roll pin sonde lid. Design places a two-degree bend near the front of the tool for responsive steerability. Direct connect to reduce length for ease of tool handling. The patent-pending universal joint delivers up to 1,500 ft-lb (2,030 Nm) of downhole torque. Compatible with minimum 6.25-in (15.9-cm) cut diameter tricone and PDC bits on a 3.5-in API thread.