The RBB60 Single Backstay Roller Bearing Block is ideal for backstays (permanent backstays) as the upper block in a cascade system or for a 2:1 main halyard arrangement. Made with top quality materials like machined black anodised aluminium and Torlon roller bearings, it ensures durability and performance under all conditions.  

Acetal thrust bearings stabilize the sheave when subjected to side loads. 

Seldén Roller Bearing Blocks (RBB) is our performance range and unrivalled in terms of low friction for the trimmer to endure driving the boat forward for longer periods of time. 

Safe working Load: 1500 kg
Breaking Load: 3000 kg
Max line size: 12 mm