80 mm Roller Bearing Block - Double, Swivel Optimist Ideal for control lines on

Ideal for control lines on dinghies and keelboats as well as flag line applications on yachts

Length: 87 mm

That means

The 70 mm Plain Bearing Block - Single Becket is designed for high strength and performance on medium sized boats

Ideal as jib sheet tracks for keelboats

80 mm Roller Bearing Block - Double, Swivel Optimist Ideal for control lines onThe RBB80 Double Roller Bearing Block is designed for high load, dynamic applications. Made with top quality materials like machined black anodised aluminium and Torlon roller bearings, it ensures durability and performance under all conditions. The marine grade stainless shaft is swiveling but can be fixed in 0 or 90 position with a set screw. It is hollow and chamfered to reduce weight and the shackle is optimized with a 6 mm body and 8 mm pin. All