80 mm Roller Bearing Block - Cheek, Flat base Turnbuckle Pin The cleat can be paired

The cleat can be paired with a tapered pad (sold separately) to adjust the angle for better rope alignment

A "Do-it-yourself" kit based on a ø84 mm aluminium spinnaker pole section with Seldéns composite 534-854 series end fitting with trip trigger as outboard end and the aluminium 534-778 series in board end

Ideal for heavy and static tackle applications such as mainsheet and boom vang

Polymer thrust bearings resist side loads

making it ideal for precise and safe rig adjustments in line with Seldén's guidelines

80 mm Roller Bearing Block - Cheek, Flat base Turnbuckle Pin The cleat can be pairedThe RBB80 Cheek Block with M8 mount is a high load roller bearing block designed for fixed installations. Made from black anodized aluminium and featuring Torlon roller bearings, it offers durability and performance under dynamic loads. Polymer thrust bearings help resist side loads, while a polymer washer insulates stainless steel components from aluminium, preventing corrosion. Ideal for halyards, control lines and spinnaker sheets in applications