... )price cheap, 4)100% replace Ridgid. 1)The 918 Hydraulic Roll Groover features a powerful 10 ton hydraulic ram ... 2)With one man set-up and operation,the 918 is the ideal groover for job-site requirements, ... 3)The 918 mounts quickly to Ridgid 300 power drive.4) ... Designed to provide maximum efficiency,the 918 is capable of grooving up to 12" schedule 10 ...