Ronstan Series 55 Single Orbit BB Block Upright Lead

The orbital ball-bearing arrangement gives the largest possible bearing race diameter. This maximises load performance. The proven Ronstan 2-stage bearing system features high compression grade acetal ball bearings and a secondary full-contact bearing. This gives minimum friction across the full working load range.

Applications

• Mainsheet systems on dinghies, sportsboats and small keelboats to 9m (30ft)

Spinnaker sheets on dinghies, sportsboats and small keel boats to 9m (30ft)Halyard, Vang and Backstay application on boats to 8m (26ft)Control line applications on larger yachts