Hydraulic motor with adjustable flow for speeds from 150 through 1,000 RPM. Drilling rate controlled by both pressure and speed eliminating the tendency for hard aggregates to move. 310-mm automatic travel. Includes NX (54 mm) diameter diamond core barrel for specimens up to 150 mm long. Comes with a vise table to hold prismatic rock samples. Hydraulic pump, water swivel, drip pan, vise table, and motor head assembly also included. PLC Control unit with automatic mode.