ROLL GROOVING | RIDGID ROLL GROOVER 918The MexX Power Model Ridgid Roll Groover 918, a powerful, ergonomic 15-ton hydraulic ram in a compact, easy to transport unit. The MexX Power 918 mounts quickly to a MexX power Model 300 Power Drive and can be adapted to fit RIDGID® 300, 1822, or 1224 pip..