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  1. 40mm Zircon block
    SKU: HK2190
    Use the Harken Zircon blocks for precision trimming. The blocks are very efficient that you can adjust the sail and sheet tension perfectly. Harken Zircon blocks are made for jib sheets, spinnaker sheets and mainsail sheets. Learn More
    €64.99 €64.99
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  2. 40mm Zircon block with becket
    SKU: HK2191
    Use the Harken Zircon blocks for precision trimming. The blocks are very efficient that you can adjust the sail and sheet tension perfectly. Harken Zircon blocks are made for jib sheets, spinnaker sheets and mainsail sheets. Learn More
    €66.99 €66.99
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  3. 40mm Zircon double block
    SKU: HK2192
    Use the Harken Zircon blocks for precision trimming. The blocks are very efficient that you can adjust the sail and sheet tension perfectly. Harken Zircon blocks are made for jib sheets, spinnaker sheets and mainsail sheets. Learn More
    €109.95 €109.95
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  4. 40mm Zircon double block with becket
    SKU: HK2193
    Use the Harken Zircon blocks for precision trimming. The blocks are very efficient that you can adjust the sail and sheet tension perfectly. Harken Zircon blocks are made for jib sheets, spinnaker sheets and mainsail sheets. Learn More
    €116.95 €116.95
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  5. 57mm Zircon block
    SKU: HK2195
    Use the Harken Zircon blocks for precision trimming. The blocks are very efficient that you can adjust the sail and sheet tension perfectly. Harken Zircon blocks are made for jib sheets, spinnaker sheets and mainsail sheets. Learn More
    €75.99 €75.99
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  6. 57mm Zircon block with becket
    SKU: HK2196
    Use the Harken Zircon blocks for precision trimming. The blocks are very efficient that you can adjust the sail and sheet tension perfectly. Harken Zircon blocks are made for jib sheets, spinnaker sheets and mainsail sheets. Learn More
    €78.49 €78.49
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  7. 57mm Zircon double block
    SKU: HK2197
    Use the Harken Zircon blocks for precision trimming. The blocks are very efficient that you can adjust the sail and sheet tension perfectly. Harken Zircon blocks are made for jib sheets, spinnaker sheets and mainsail sheets. Learn More
    €149.95 €149.95
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  8. 57mm Zircon double block with becket
    SKU: HK2198
    Use the Harken Zircon blocks for precision trimming. The blocks are very efficient that you can adjust the sail and sheet tension perfectly. Harken Zircon blocks are made for jib sheets, spinnaker sheets and mainsail sheets. Learn More
    €157.95 €157.95
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  9. Series 75 Core Block, Single RF74100
    SKU: RF74100
    Core 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 or static loads. Learn More
    €125.95 €125.95
    Ronstan
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  10. Series 75 Core Block, Halyard RF74108
    SKU: RF74108
    Core 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 or static loads. Learn More
    €102.95 €102.95
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  11. Series 75 Core Block, Single, Becket RF74110
    SKU: RF74110
    Core 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 or static loads. Learn More
    €159.95 €159.95
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  12. Series 75 Core Block, Stand-Up RF74140
    SKU: RF74140
    Core 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 or static loads. Learn More
    €235.95 €235.95
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  13. Series 75 Core Block, Foot RF74151
    SKU: RF74151
    Core 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 or static loads. Learn More
    €133.95 €133.95
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  14. Series 75 Core Block, Double, Non-Swivel Head RF74202
    SKU: RF74202
    Core 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 or static loads. Learn More
    €249.95 €249.95
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  15. Shock, Pair, 5mm (3/16") Line, 6mm (1/4") Webbing
    SKU: RF8080
    Shock, (Pair) - the Sheaveless block Learn More
    From €19.20 €19.20
    Ronstan
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  16. Shock, 10mm, (3/8") Line, 10mm (3/8") Webbing
    SKU: RF8081
    Shock - the Sheaveless block Learn More
    From €13.95 €13.95
    Ronstan
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  1. Brands
    Harken
  2. Brands
    Ronstan
  3. Series
    Shock
  4. Series
    Series 75 Core
  5. Series
    Zircon
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Brands
  1. Harken 8 items
  2. Ronstan 8 items
Block type
  1. Becket 3 items
  2. Cheek 1 item
  3. Stand-up 1 item
  4. Low friction ring 2 items
Series
  1. 16 mm 16 items
  2. Black Magic 23 items
  3. Carbo 141 items
  4. Classic 17 items
  5. Element 46 items
  6. Low friction Ring 1 item
  7. Micro 19 items
  8. Midrange 4 items
  9. Orbit 4 items
  10. Protexit 5 items
  11. Series 19 5 items
  12. Series 20 19 items
  13. Series 22 1 item
  14. Series 25 2 items
  15. Series 25 - 30 12 items
  16. Series 30 4 items
  17. Series 30 Orbit 15 items
  18. Series 40 10 items
  19. Series 40 Orbit 16 items
  20. Series 50 9 items
  21. Series 55 Orbit 16 items
  22. Series 60 1 item
  23. Series 60 Core 14 items
  24. Series 75 Core 6 items
  25. Shock 2 items
  26. Wire block 12 items
  27. Zircon 8 items
Bearing
  1. Ball bearing 8 items
  2. Plain bearing 6 items
Sheaves Ø
  1. 40 mm 4 items
  2. 57 mm 4 items
Cam
  1. No 14 items
Swivel
  1. Yes 3 items
  2. No 11 items
Ratchet
  1. No 14 items
Max rope diameter
  1. 5 mm 1 item
  2. 8 mm 4 items
  3. 10 mm 5 items
  4. 14 mm 6 items
Number of sheaves
  1. 1 9 items
  2. 2 5 items
Breaking strength (kg)
  1. < 1500 8 items
  2. 3000 - 4500 6 items
Safe Working Load (kg)
  1. < 1500 8 items
  2. 1500 - 3000 6 items
Price
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