Except single roller fairlead, we could call others multi-roller fairlead. Here we list the mainly used products according to different standards. In CB 3062-79, there are four, five, seven, nine rollers, etc. In JIS F2060-80, there are four and five rollers for reference. In DIN (German standard), there are four to twelve rollers fairlead. There is one more category named St. Lawrence Fairlead with standard of CB T3139-2000.Most above fairleads are used on commercial ships or big vessels. But we also can supply most types for lifeboats.