The RIDGID® model 918 hydraulic roll groover features a powerful 15-ton hydraulic ram in a compact, easy to transport unit. With one man set up and operation, the 918 is the ideal groover for job site requirements. The 918 mounts quickly to RIDGID® 300 power drive, 535, 1822, or 1224 threading machines designed to provide maximum efficiency, the 918 is capable of grooving up to 12 in schedule 10 and 8 in schedule 40 standard wall pipes.