Harken 29 mm Clew Block
$36.36Low-friction Carbo Air blocks are lightweight, strong, reliable-and affordable. Companions to the popular Harken Black Magic block line, these small, compact blocks have very high working loads for safe, easy trimming. Imperial Metric Sheave Diameter 1 1/8 in 29 mm Max Line Diameter 5/16 in 8 mm Max Working Load 330 lbs 150 kg