Sailboat Blocks

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    Ronstan Series 60 Core Block™ - Single RF64100

    Series 60 Core Block™ - SingleCore Blocks™ are a true all round solution. A tuned 2-stage bearing system provides excellent performance across the full working load range with an integrated thrust bearing feature and the resilience to handle high dynamic...
    MSRP: $130.20
    $110.67

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    Harken Midrange Double Block 1544

    Midrange Double BlockMidrange blocks’ robust construction makes them ideal to handle the high loads found on medium and large offshore boats. Sheave runs exclusively on a ball bearing system for fast trim and release under any load.Features: Sheave:...
    MSRP: $312.10
    $274.95
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    Harken Midrange Single w/ Aluminum Sheave Block 1542

    Midrange Single with Aluminum Sheave BlockMidrange blocks’ robust construction makes them ideal to handle the high loads found on medium and large offshore boats. Sheave runs exclusively on a ball bearing system for fast trim and release under any load...
    MSRP: $213.70
    $187.95
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    SeaSure 25mm Treble Block w/Center Becket 00.32CRD

    25mm Treble Block with Center Becket The 25mm plain bearing block range is one of SeaSure's oldest and best-selling ranges. The range uses marine-grade stainless steel side plates and rivets with an arnite (plastic) sheave, which is incredibly...
    $54.78
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    SeaSure 25mm Treble Block w/Shackle 00.31CRD

    25mm Treble Block with Shackle The 25mm plain bearing block range is one of SeaSure's oldest and best-selling ranges. The range uses marine-grade stainless steel side plates and rivets with an arnite (plastic) sheave, which is incredibly hard-wearing and...
    $51.17
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    SeaSure 25mm Double Block w/Becket 00.23CRD

    25mm Double Block with Becket The 25mm plain bearing block range is one of SeaSure's oldest and best-selling ranges. The range uses marine-grade stainless steel side plates and rivets with an arnite (plastic) sheave, which is incredibly hard-wearing and...
    $44.00
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    Barton Marine 64mm Diameter Ball Bearing Rope Sheave 64914

    64mm Diameter Ball Bearing Rope Sheave A replacement all-purpose rope sheave. Used throughout the complete Barton block range. Molded from UV-resistant acetal resin, the Barton sheave is made to survive the harsh marine environment. The unique, super-low...
    MSRP: $27.84
    $24.26
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    Harken 40mm Twing Block 2699

    40mm Twing Block Low-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to our popular Harken Big Boat blocks, these small, compact blocks have very high working loads for safe, easy trimming. Features: Opening side...
    $75.85
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