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Blocks

Sailing Blocks

Sailing blocks provide smooth, reliable line control for sails, rigging, and deck operations. Engineered for strength and low friction, blocks make sail handling efficient, safe, and precise in all conditions.

High-Performance Sailing Blocks

  • Durable, corrosion-resistant construction for long-lasting use
  • Low-friction sheaves for smooth line handling and reduced wear
  • Ideal for mainsails, jibs, spinnakers, and custom rigging setups
  • Marine-grade materials designed for performance in saltwater and freshwater

Trusted Brands

Top sailing block brands include Barton Marine, Harken, Lewmar, Ronstan, Schaefer Marine, SeaSure, and Wichard Marine.

Related Sailing Categories

Accessories, Rigging, Rope, Winches

Why Buy Sailing Blocks from MarineWaze

  • Premium-grade blocks for smooth, efficient line handling
  • Trusted brands for durability, strength, and marine performance
  • Expert guidance for selecting the right blocks for your rigging
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  • Harken 40mm Carbo Air Double Swivel Block w\/Becket [2639]
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    Harken 40mm Carbo Air Double Swivel Block w/Becket [2639]

    Harken

    MSRP: $106.05
    $93.95
    40mm Carbo Air Double Swivel Block with BecketLow-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...
    MSRP: $106.05
    $93.95
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    MSRP: $106.05
    $93.95
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  • Harken 40mm Carbo Air Double Swivel Block [2638]
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    Harken 40mm Carbo Air Double Swivel Block [2638]

    Harken

    MSRP: $98.85
    $86.95
    40mm Carbo Air Double Swivel BlockLow-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...
    MSRP: $98.85
    $86.95
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    MSRP: $98.85
    $86.95
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  • Harken 40mm Pivoting Lead Block - Carbo-Cam Cleat [2157]
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    Harken 40mm Pivoting Lead Block - Carbo-Cam Cleat [2157]

    Harken

    MSRP: $95.55
    $83.95
    40mm Pivoting Lead Block - Carbo-Cam® CleatHigh-strength pivoting lead blocks with cams are used for halyard controls on larger keelboats and as “headknockers” on dinghies and beachcats for sheeting directly from the boom. Hole spacing...
    MSRP: $95.55
    $83.95
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    MSRP: $95.55
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  • Harken 40mm Carbo Air Pivoting Lead Block w\/Aluminum Cam-Matic Cleat [2156]
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    Harken 40mm Carbo Air Pivoting Lead Block w/Aluminum Cam-Matic Cleat [2156]

    Harken

    MSRP: $102.20
    $89.95
    40mm Carbo Air Pivoting Lead Block with Aluminum Cam-Matic® CleatHigh-strength pivoting lead blocks with cams are used for halyard controls on larger keelboats and as “headknockers” on dinghies and beachcats for sheeting directly from...
    MSRP: $102.20
    $89.95
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    MSRP: $102.20
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  • Ronstan Series 20 Ball Bearing Block- Single, Stand-Up Loop Top [RF20141]
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    Ronstan Series 20 Ball Bearing Block- Single, Stand-Up Loop Top [RF20141]

    Ronstan

    MSRP: $26.91
    $22.87
    Series 20 Ball Bearing Block- Single, Stand-Up Loop TopFeatures:Low frictionHigh static and dynamic load capacityLightweightPrecision molded Acetal sheaves running on stainless steel or Torlon® ball bearings provide high performance & low...
    MSRP: $26.91
    $22.87
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    $22.87
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  • Ronstan Series 40 Ball Bearing Block - Double - Swivel Head [RF40200]
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    Ronstan Series 40 Ball Bearing Block - Double - Swivel Head [RF40200]

    Ronstan

    MSRP: $87.84
    $74.66
    Series 40 Ball Bearing Block - Double - Swivel HeadFeatures:Low friction Acetal or Torlon® bearing systemLightweightCheek cut-outs for easy bearing maintenanceFeatures a swivel shackle head for full 360° rotationSheaves running on Acetal or...
    MSRP: $87.84
    $74.66
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    MSRP: $87.84
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  • Harken 75mm Carbo Air Block w\/Swivel [2660]
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    Harken 75mm Carbo Air Block w/Swivel [2660]

    Harken

    MSRP: $111.80
    $98.95
    75mm Carbo Air Block with SwivelLow-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...
    MSRP: $111.80
    $98.95
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    MSRP: $111.80
    $98.95
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  • Harken 40mm Carbo Air Fiddle Block w\/Swivel Becket [2656]
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    Harken 40mm Carbo Air Fiddle Block w/Swivel Becket [2656]

    Harken

    MSRP: $66.90
    $58.95
    40mm Carbo Air Fiddle Block with Swivel & BecketLow-friction Carbo Air blocks are lightweight, strong, reliable—and affordable. Companions to the popular Harken® Black Magic® line, these small, compact blocks have very high working...
    MSRP: $66.90
    $58.95
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    MSRP: $66.90
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  • Harken 40mm Carbo Air Block w\/Swivel [2636]
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    Harken 40mm Carbo Air Block w/Swivel [2636]

    Harken

    MSRP: $43.65
    $38.95
    40mm Carbo Air Block with SwivelLow-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...
    MSRP: $43.65
    $38.95
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    MSRP: $43.65
    $38.95
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  • Harken 57mm Carbo Air Fiddle Block w\/Swivel Becket [2622]
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    Harken 57mm Carbo Air Fiddle Block w/Swivel Becket [2622]

    Harken

    MSRP: $83.80
    $73.95
    57mm Carbo Air Fiddle Block with Swivel & BecketLow-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...
    MSRP: $83.80
    $73.95
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    MSRP: $83.80
    $73.95
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  • Harken 16mm Block w\/Swivel [417]
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    Harken 16mm Block w/Swivel [417]

    Harken

    MSRP: $36.40
    $31.95
    16mm Block with SwivelThe 16 mm is Harken’s® smallest block. It is perfect for small synthetic control lines found on high-tech dinghies. The patented bearing system uses stainless steel balls in a captive grooved race and has a 250 lb (113...
    MSRP: $36.40
    $31.95
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    MSRP: $36.40
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  • Harken 16mm Triple Block w\/Becket [409]
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    Harken 16mm Triple Block w/Becket [409]

    Harken

    MSRP: $62.55
    $54.95
    16mm Triple Block with BecketThe 16 mm is Harken’s smallest block. It is perfect for small synthetic control lines found on high-tech dinghies. The patented bearing system uses stainless steel balls in a captive grooved race.Specifications:Sheave:...
    MSRP: $62.55
    $54.95
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    MSRP: $62.55
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