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Harken Black Magic Air Runner
Harken Black Magic Air Runners are strong, lightweight blocks with extremely freerolling sheaves. Blocks feature Torlon roller bearings in a center cage for strength. Sideload bearing strips dampen rig vibration.
Heads are offered with parallel/perpendicular shackles. Tangs attach turnbuckles, toggles, and other fittings. No tools required for installation.