The ridgid 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 it is the ideal groover for job site requirements the 918 mounts quickly to ridgid 300 power drive and 535 1822 or 1224 threading machines designed to provide maximum efficiency it is capable of grooving up to 12in schedule 10 and 8in schedule 40 standard wall pipes roll set changeout is accomplished in seconds capacity steel 1 12 inch copper 2 6 in