Harken 57mm Aluminum Stand-up Block RHKYC-Branded Products Footnote : If double stacked

Footnote : If double stacked

Sheave Ø (in)1 1/4 in

Other features include an adjustable back support

making them the lightest soft-attach blocks Harken has ever designed

Maximum working load (kg)2268 kg

Harken 57mm Aluminum Stand-up Block RHKYC-Branded Products Footnote : If double stackedPart 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.