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Harken 57mm HL Standup Block

Harken 57mm HL Standup Block

Product Details

    Technical Description

    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.

    Tech Specs

    Imperial Metric
    Sheave Ø 57 mm 2 1/4 in
    Length 114 mm 4 1/2 in
    Weight 200 g 7.04 oz
    Maximum line Ø 12 mm 7/16 in
    Maximum working load 1134 kg 2500 lb
    Breaking load 2268 kg 5000 lb
    Fasteners 6 mm 1/4 in
    Fastener circle 37 mm 1 15/32 in
    A 57 mm 2 7/32 in
    B 56 mm 2 3/16 in
    C 32 mm 1 1/4 in

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