Selden Ball Bearing Blocks (BBB) are to designed give you great bearing strength under moderate and dynamic loads where good sheave rotation and minimal friction are desired.The lightweight 30mm series features stainless steel ball bearings with Acetal sheaves and bearing cages for optimum bearing strength even under high dynamic loads. These 30mm Selden Blocks are typically found in mainsheet, spinnaker, and genoa sheet applications in dinghies as well as control line applications.
- Glass fiber reinforced composite
- Acetal bearing cage to prevent ball-to-ball friction and to reduce weight
- Stainless steel ball bearings