Harken 57mm Aluminum Stand-up Block RHKYC-Branded Products The 463 U-Adaptor adapts 75

The 463 U-Adaptor adapts 75 mm Carbo singles to swivel bases

Maximum working load (kg)2268 kg

Double-wall & Vacuum insulated

Mounting slug weight (oz)0

Footnote : If double stacked

Harken 57mm Aluminum Stand-up Block RHKYC-Branded Products The 463 U-Adaptor adapts 75Part No. 3227 Black Magic Air blocks are a top favorite of Big Boat performance racers and cruisers. These lightweight, free running, powerful performers are used for sail controls that see lots of action. Sideplates and sheaves Hard Lube anodized for maximum UV protection and a smooth surface. Center cage keeps Torlon roller bearings separated and parallel to reduce friction. Torlon is a registered trademark of Solvay Advanced Polymers L. L. C.