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Sailing blocks. Buy online with Fosters, the home of quality sailing & yachting hardware for over 100 years. Stockists of Harken, Ronstan, Cleveco, HYE, Spinlock
  • RONSTAN SERIES 20 EXIT BLOCK-SIDE TAB

    Original price $44.91 - Original price $44.91
    Original price
    $44.91
    $44.91 - $44.91
    Current price $44.91
    Out of stock

    Precision moulded Acetal sheaves running on stainless steel or Torlon® ball bearings provide high performance & low friction. Applications •...

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  • RONSTAN SERIES 20 PIVOTING CLEAT BASE

    Original price $84.82 - Original price $84.82
    Original price
    $84.82
    $84.82 - $84.82
    Current price $84.82
    Out of stock

    Ronstan swivel cleat bases permit easy cleating and releasing from any angle.Sheave can be relocated to allow the control line to feed from below. ...

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  • RONSTAN SERIES 30 BB SHEAVE

    Original price $95.00
    Original price $95.00 - Original price $95.00
    Original price $95.00
    Current price $91.84
    $91.84 - $91.84
    Current price $91.84
    Low stock

    Alloy, 30mm x 7.7mm x ID6.2mm. Torlon® balls FEATURESOversize Torlon® balls minimise friction SpecificationsProduct SpecificationsBore (mm)    6Dia...

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  • RONSTAN SERIES 50 EXIT BLOCK-SIDE TAB

    Original price $88.98 - Original price $88.98
    Original price
    $88.98
    $88.98 - $88.98
    Current price $88.98
    In stock

    Ronstan manufactures an extensive range of sheave boxes for use with rope and wire. Plain bearing sheaves are ideal for halyards and other applicat...

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  • RONSTAN SHOCK SHEAVELESS BLOCKS - 2 PACK

    Original price $26.06 - Original price $26.06
    Original price
    $26.06
    $26.06 - $26.06
    Current price $26.06
    Low stock

    The Sheaveless Block Available in four colour options - blue, green, grey and red with several attachment options, including webbing, pigtail, lash...

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  • RONSTAN SHOCK XL SHEAVELESS BLOCKS

    Original price $25.61 - Original price $25.61
    Original price
    $25.61
    $25.61 - $25.61
    Current price $25.61
    Low stock

    The SHeaveless blOCK XL Available in four colour options - blue and red with several attachment options, including webbing, pigtail, lashing and dy...

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  • RONSTAN SINGLE LEAD BLOCK 19MM

    Original price $21.36 - Original price $21.36
    Original price
    $21.36
    $21.36 - $21.36
    Current price $21.36
    Low stock

    Ronstan Lead blocks are a low profile solution for leading halyards or other rig sail controls back to cleats or jammers. Applications •Typicall...

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  • RONSTAN SINGLE LEAD BLOCK 25MM

    Original price $24.31 - Original price $24.31
    Original price
    $24.31
    $24.31 - $24.31
    Current price $24.31
    In stock

    Ronstan Lead blocks are a low profile solution for leading halyards or other rig sail controls back to cleats or jammers. Applications •Typicall...

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  • RONSTAN SINGLE STEERING PULLEY

    Original price $39.15 - Original price $39.15
    Original price
    $39.15
    $39.15 - $39.15
    Current price $39.15
    In stock

    Ronstan powerboat steering pulley. Sheave has a deep groove to cradle 5mm (3/16") diameter Wire. Applications •Ideal for small runabouts where h...

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  • RONSTAN SNATCH BLOCK 139MM

    Original price $326.54 - Original price $326.54
    Original price
    $326.54
    $326.54 - $326.54
    Current price $326.54
    Low stock

    Snatch blocks are a tough and reliable solution for temporary leads and line deflection. Simple and quick to deploy, they can be easily opened when...

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  • RONSTAN SNATCH BLOCK 176MM

    Original price $339.30 - Original price $339.30
    Original price
    $339.30
    $339.30 - $339.30
    Current price $339.30
    Low stock

    Snatch blocks are a tough and reliable solution for temporary leads and line deflection. Simple and quick to deploy, they can be easily opened when...

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  • RONSTAN STAND UP BASE SERIES 40 / 55 BLOCKS

    Original price $41.33 - Original price $41.33
    Original price
    $41.33
    $41.33 - $41.33
    Current price $41.33
    Low stock

    Ronstan stand up swivel base. Suits Ronstan Series 40 and Series 55 shackle on or loop blocks. BASE DIMENSIONS: 48mm x 17mm

  • RONSTAN SWIVEL BASE 180 & CLEAT

    Original price $111.95 - Original price $111.95
    Original price
    $111.95
    $111.95 - $111.95
    Current price $111.95
    Low stock

    Ronstan 180 degree swivel base and cleat. Attach to mast or boom for direct adjustment and cleating of control lines. Sheave can be re-located to f...

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  • RONSTAN TRUNNION SNATCH BLOCK 133MM

    Original price $351.13 - Original price $351.13
    Original price
    $351.13
    $351.13 - $351.13
    Current price $351.13
    Low stock

    Snatch blocks are a tough and reliable solution for temporary leads and line deflection. Simple and quick to deploy, they can be easily opened when...

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  • RONSTAN UPRIGHT LEAD BLOCK 22MM

    Original price $37.62 - Original price $37.62
    Original price
    $37.62
    $37.62 - $37.62
    Current price $37.62
    Out of stock

    Ronstan Lead blocks are a low profile solution for leading halyards or other rig sail controls back to cleats or jammers.When mounted in an inverte...

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  • RONSTAN WIRE BLOCK 25MM FERRULE TOP

    Original price $41.03 - Original price $41.03
    Original price
    $41.03
    $41.03 - $41.03
    Current price $41.03
    Out of stock

    Ronstan Wire Blocks have purpose deisgned narrow sheaves and grooves. Removal sheave for easy fitting and without cutting the wire termination •F...

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  • RONSTAN WIRE BLOCK FERRULE EYE

    Original price $67.06 - Original price $67.06
    Original price
    $67.06
    $67.06 - $67.06
    Current price $67.06
    Low stock

    Ronstan Wire blocks have purpose deisgned narrow sheaves and grooves. Removable sheave for easy fitting and without cutting the wire termination. ...

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  • RONSTAN WIRE BLOCK TUBE HEAD

    Original price $73.30 - Original price $73.30
    Original price
    $73.30
    $73.30 - $73.30
    Current price $73.30
    Low stock

    Ronstan wire blocks have purpose deisgned narrow sheaves and grooves. Removable sheave for easy fitting and without cutting the wire termination. ...

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  • SINGLE BLOCK CLEVECO 48MM BECKET

    Original price $52.73 - Original price $52.73
    Original price
    $52.73
    $52.73 - $52.73
    Current price $52.73
    Low stock

    Cleveco Keeler block, 48x13mm delrin sheave, ferrule top & becket. Ideal for smaller keelers and cruising boats. A very sturdy and long lasting...

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  • SMC 2" Single Aluminum Prusik Minding Pulley "PMP"

    Original price $147.24 - Original price $147.24
    Original price
    $147.24
    $147.24 - $147.24
    Current price $147.24

    Single PMP is sized to fit between our Micro PMP and 3” PMPs and represents a mid-sized option for those needing the unique features of a PMP. This...

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  • SMC 3" Single Aluminum Prusik Minding Pulley "PMP"

    Original price $257.69 - Original price $257.69
    Original price
    $257.69
    $257.69 - $257.69
    Current price $257.69
    Low stock

    The 3" PMP is the largest of three sizes of SMC Prusik Minding Pulleys and therefore handle the largest loads and toughest tasks. PMP’s feature...

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  • SMC CRX Crevasse Rescue Pulley

    Original price $48.83 - Original price $48.83
    Original price
    $48.83
    $48.83 - $48.83
    Current price $48.83

    The lightweight CRx has a stainless-steel axle and lightweight nylon sheave to maximize efficiency and provide the best strength to weight ratio. I...

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  • SMC Swiftwater Pulley

    Original price $128.30 - Original price $128.30
    Original price
    $128.30
    $128.30 - $128.30
    Current price $128.30

    With the possible exception of rope it can be argued that a pulley is one of the most important components used in all forms of rescue as well as w...

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  • SPINLOCK BRS SPINNAKER BLOCK 50MM

    Original price $216.52 - Original price $216.52
    Original price
    $216.52
    $216.52 - $216.52
    Current price $216.52
    In stock

    Spinlock spinnaker block with lockoff cam for controlled spinnaker handling. This jammer block is for situations where a fixed foot block can?t he...

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  • SPINLOCK BRS SPINNAKER BLOCK 63MM

    Original price $333.91 - Original price $333.91
    Original price
    $333.91
    $333.91 - $333.91
    Current price $333.91
    In stock

    Spinlock spinnaker block with lockoff cam for controlled spinnaker handling. This jammer block is for situations where a fixed foot block can?t he...

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  • SPINLOCK WL/1 STANCHION LEAD BULLSEYE

    Original price $35.90 - Original price $35.90
    Original price
    $35.90
    $35.90 - $35.90
    Current price $35.90
    In stock

    Spinlock compact stanchion furling lead bullseye. Ideal for running furling lines aft to the cockpit.  - Compact and cost effective furling line gu...

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  • SPINLOCK WL/2 STANCHION LEAD BLOCK

    Original price $53.90 - Original price $53.90
    Original price
    $53.90
    $53.90 - $53.90
    Current price $53.90
    In stock

    Spinlock compact stanchion furling lead bullseye. Ideal for running furling lines aft to the cockpit.  - Compact and cost effective furling line gu...

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  • STEERING PULLEY 51.8MM

    Original price $38.04 - Original price $38.04
    Original price
    $38.04
    $38.04 - $38.04
    Current price $38.04
    Out of stock

    Cleveco Ferrule Top Steering Pulley stainless steel with delrin sheaves 51 x 8mm (2" x 5/16") Single Sheave Breaking Strain: 454kgs Weight: 43g

  • STEERING PULLEY DOUBLE 51.8MM

    Original price $53.85 - Original price $53.85
    Original price
    $53.85
    $53.85 - $53.85
    Current price $53.85
    In stock

    Cleveco Ferrule Top Steering Pulley stainless steel with double delrin sheaves 51 x 8mm (2" x 5/16") Double Sheave Breaking Strain 907kgs Weight: 71g

  • STEERING PULLEY DOULE 36MM

    Original price $33.95 - Original price $33.95
    Original price
    $33.95
    $33.95 - $33.95
    Current price $33.95
    Low stock

    Cleveco Double Steering Pulley. Stainless Steel with Delrin sheave. 38 x 8mm (1 1/2" x 5/16") Double Sheaves Ferrule Top Steering Pulley Breaking S...

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  • STEERING PULLEY SINGLE 36MM

    Original price $36.43 - Original price $36.43
    Original price
    $36.43
    $36.43 - $36.43
    Current price $36.43
    In stock

    Cleveco Steering Pulley. Stainless Steel with Delrin sheave. 38 x 8mm (1 1/2" x 5/16") Single Sheave Ferrule Top Steering Pulley Breaking Strain: 4...

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  • STEERING PULLEY UPRIGHT 51.8MM

    Original price $41.18 - Original price $41.18
    Original price
    $41.18
    $41.18 - $41.18
    Current price $41.18
    Low stock

    Cleveco Single Sheave Upright Steering Pulley Also Useful As Halyard Block In Mast Head 51 x 8mm (2" x 5/16") Breaking Strain: 816kgs Weight: 43g

  • STROP FOR SPINLOCK BRS SPINNAKER BLOCKS

    Original price $53.50 - Original price $53.50
    Original price
    $53.50
    $53.50 - $53.50
    Current price $53.50
    In stock

    Replacement strop for both models of Spinlock BRS spinnaker lockoff blocks. ?Webbing strop for attaching the BRS Spinnaker block to a toe rail or ...

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  • U ADAPTOR FOR 3/8 POST BLOCKS

    Original price $23.00 - Original price $23.00
    Original price
    $23.00
    $23.00 - $23.00
    Current price $23.00
    In stock

    The 093 U-adaptor allows blocks with 3/8 in (10 mm) posts to be attached to swivel bases or to other blocks with 3/8 in (10 mm) posts. Shackle pin...

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  • WIRE GUIDE BLOCK 13X6MM ANGLED

    Original price $28.53 - Original price $28.53
    Original price
    $28.53
    $28.53 - $28.53
    Current price $28.53
    In stock

    Cleveco Angled Base Brass Sheave Wire Guide Block 13 x 6mm (1/2" x 1/4") 17mm (11/16") High Breaking strain: 590kgs Weight: 14g