As Andy says, there are no bolts or other permanent anchors on the OFD III traverses. You'll need to use the numerous naturals. However, while the traverses have a high degree of exposure they are not technically difficult and most cavers don't rig traverse lines to cross them. There are big ledges for your feet, on either side, most of the way along and good handholds on the bits where the ledges are more sketchy.