60 mm Roller Bearing Block - Cheek, M8 Single It features a ø40 mm

It features a ø40 mm plain bearing sheave for 3:1 purchase of the control line

The S40 Double Soft Attachment Block features two 40 mm sheaves

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making this block ideal for sheets and control lines

It features stainless steel ball bearings for smooth rotation and is made of lightweight yet strong materials

60 mm Roller Bearing Block - Cheek, M8 Single It features a ø40 mmThe RBB60 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