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 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.