HARKEN 57mm Runner Block 2364 using the emergency crank/clutch handle

using the emergency crank/clutch handle provided

Base size: 135 + 88mm

Lightweight fiber-reinforced Carbo-Cams® for racing where weight is critical

hardcoat-anodised

HARKEN 57mm Runner Block 2364 using the emergency crank/clutch handleRunners are used on running backstays of offshore boats to adjust mast bend for different wind conditions. Integrated sideplate bails and recessed cotter key help produce a smooth design that wont snag lifelines. Sideplates and sheaves Hard Lube anodized for maximum UV protection and a smooth surface. Centre cage keeps Torlon roller bearings separated and parallel to reduce friction. Torlon is a registered trademark of Solvay Advanced Polymers L. L. C.