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Mainsheet Jammers

Our range of mainsheet jammers from Harken, Allen, Selden and Ronstan are light weight, innovative and designed to optimise mainsheet jamming.

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  • U-Adapter Assembly for 3/8 Post
    £8.39
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  • Light Weight Swivels Fork to Short Fork
    £8.66
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  • Light Weight Swivels Fork to Fork
    £8.66
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  • Swivel Base Boy Fitting
    £9.71
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  • Stainless Steel Universal Swivel Base
    £10.63
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  • Stand Up Base, Suits S40 BB & RT Orbit Blocks
  • Stand Up Base Suits S55 BB and RT 55mm
    £14.96
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  • Swivel Base to suit BB & RT Orbit Block
    £25.52
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  • Mast Swivel RF5
    £38.66
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  • Small Comp Swivel Cleat
    £39.34
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  • Mast Swivel 27
    £42.17
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  • 360 Rotation with Optional Stop at 45/60/80 Swivel Cleat
  • Swivel Cleat
    £46.72
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  • Stand Up Base Adapter
    £47.32
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  • Mast Swivel 38
    £48.37
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  • Swivel Cleat With Removable Sheave
    £48.46
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  • 25 mm Low-Load Base swivel
    £51.33
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  • Large Swivel Lead with Composite Cleat Swivel Cleat
  • Bullseye With Swivel Base & 27mm Cleat
    £55.40
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  • Bullseye With Swivel Base & 38mm Cleat
    £61.02
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  • Bullseye Swivel with Cleat
    £61.26
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  • Mast Swivel
    £63.22
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  • Small Swivel Lead with Alloy Cleat
    £66.37
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  • 29mm Carbo Pivot Lead & Carbo Cam Cleat
    £66.64
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