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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. 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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  4. 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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  5. Series 19 Wire Block Ferrule Top RF560
    SKU: RF560
    Wire blocks suit halyards, vang and backstay applications Learn More
    €23.25 €23.25
    Ronstan
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  6. Series 19 Block, Tube Rivet RF661
    SKU: RF661
    Stainless steel cheeks and Acetal sheaves ensure a long service life with virtually no maintenance. Hollow rivets accept fixing screws, shackles or can be used to add a becket for extra purchase. Learn More
    €11.85 €11.85
    Ronstan
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  7. Series 19 Wire Block Loop Top, Nylatron Sheave RF667
    SKU: RF667
    Wire blocks have purpose deisgned narrow sheaves and grooves. Learn More
    €21.00 €21.00
    Ronstan
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  8. 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
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  9. 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
    Ronstan
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  10. 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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  11. 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
    Ronstan
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  12. 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
    Ronstan
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Now Shopping by
  1. Series
    Series 70 Orbit
  2. Series
    Series 19
  3. Series
    Zircon
  4. Series
    Series 75 Core
  5. Number of sheaves
    1
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Brands
  1. Harken 4 items
  2. Ronstan 8 items
Block type
  1. Becket 2 items
  2. Cheek 1 item
  3. Stand-up 1 item
  4. Wire block 2 items
Series
  1. 16 mm 11 items
  2. Ball Bearing Block 35 items
  3. Black Magic 17 items
  4. Carbo 70 items
  5. Classic 12 items
  6. Control 19 items
  7. Dyna Blocks 1 item
  8. Element 17 items
  9. HTX 23 items
  10. Micro 10 items
  11. Midrange 2 items
  12. Plain bearing block 32 items
  13. Protexit 4 items
  14. Series 19 3 items
  15. Series 20 12 items
  16. Series 22 1 item
  17. Series 25 2 items
  18. Series 25 - 30 6 items
  19. Series 30 3 items
  20. Series 30 Orbit 7 items
  21. Series 40 6 items
  22. Series 40 Orbit 11 items
  23. Series 50 3 items
  24. Series 55 Orbit 9 items
  25. Series 60 1 item
  26. Series 60 Core 9 items
  27. Series 70 Orbit 0 items
  28. Series 75 Core 5 items
  29. Snatch 3 items
  30. Synchro 15 items
  31. Wire block 12 items
  32. Zircon 4 items
Bearing
  1. Ball bearing 4 items
  2. Plain bearing 5 items
  3. No bearing 3 items
Sheaves Ø
  1. 40 mm 2 items
  2. 57 mm 2 items
Swivel
  1. Yes 3 items
  2. No 9 items
Max rope diameter
  1. 2 mm 1 item
  2. 3 mm 1 item
  3. 5 mm 1 item
  4. 8 mm 2 items
  5. 10 mm 2 items
  6. 14 mm 5 items
Breaking strength (kg)
  1. < 1500 7 items
  2. 3000 - 4500 5 items
Safe Working Load (kg)
  1. < 1500 7 items
  2. 1500 - 3000 5 items
Price
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