Harken 3230 75mm Single Black Magic High-Load Loop Block

HARKEN 3230 Single Black Magic® Loop AirBlock® - 75mm  NEW! The entire line of Black Magic® AirBlocks® has been redesigned with a sleek new look. Their unique, performance-packed engineering remains exactly the same. Used on offshore boats, these strong, lightweight blocks feature high-load Torlon® roller bearings for a high strength-to-weight ratio and reduced wear. Rollers are housed in a center cage and stay parallel for low-friction efficiency. Sculpted hardcoat-anodized aluminum side plates protect sideload ball bearings. Dissimilar metals are isolated to minimize corrosion. Like all Black Magic® AirBlocks®, the three-way head swivels/locks in front/side positions. Blocks are easily disassembled with a single hex wrench. Use for: Sheets Halyards Running backstays Control lines Specifications: Sheave Diameter - 75mm (2-15/16") Max Line Diameter - 9/16" (14mm) Mfg No. Description Length Shackle PinDiameter Max WorkingLoad BreakingLoad Weight 3230 Single / loop 5-1/8"(129mm