80 mm Roller Bearing Block - Single, Halyard, permanent backstay S30 The block uses stainless steel

The block uses stainless steel ball bearings for smooth rotation

Acetal bearing cage to prevent ball-to-ball friction and to reduce weight

Ball bearings in stainless steel and a 2 mm / 550 mm Dyneema lashing included

SubType: standup single

This prevents ball-to-ball contact and makes for low friction

80 mm Roller Bearing Block - Single, Halyard, permanent backstay S30 The block uses stainless steelThe RBB80 Single Backstay Roller Bearing Block is ideal for backstays (permanent backstays) as the top 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. Seldn Roller Bearing Blocks (RBB) is our performance