Seldén Roller Bearing Blocks feature ultra-low friction resistance under extreme dynamic load allowing tensioned release and subsequent safe, trouble free sail handling, tacking and gybing.

Sheave Diameter: 60mm

Maximum Line Diameter: 12mm

Ultimate freerunning performance on Torlon® roller bearings

Insulating washer between stainless and aluminium to prevent corrosion

Acetal ball bearings for sheave side-load stability and resistance

Machined, black anodised aluminium sheave and cheeks

Weight-optimised hollow, chamfered swivel pin

Optimised Shackle Strength: 6mm Body/8mm Pin Diameter

Set screw switch from swivel to inline or transverse fixed shackle head