... are interchangeable to Ridgid, 2)same design as ridgid, 3)price cheap, 4)100% replace Ridgid. 1)The 918 Hydraulic ... ram in a compact, easy to transport unit,2)With one man set-up and operation,the 918 is the ... DescriptionWeight 70008918Grooving attachment 2"-12"37KG 70008A918Acomplete set with power drive,220V,50HZ100KG 70008B918Bcomplete set with power drive,110V,60HZ100KG pipe roll grooving machine