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Ball Bearing 30mm

Selden’s 30mm Ball Bearing Blocks are ideal for dinghies, keelboats and mid-sized yachts (20ft to 30ft) with ropes from 6mm to 8mm. The ball bearing system ensures smooth, low-friction performance for halyards, mainsheets, and general-purpose tackles.

With a 5mm shackle, these blocks can be used fixed or with free rotation.

Common Uses

  • Halyards
  • Mainsheets
  • General-purpose tackles

Key Features

  • Ball bearing system for smooth operation
  • 30mm acetal sheave for durability
  • Compact and lightweight

Perfect for mid-sized boats, Selden’s 30mm Ball Bearing Blocks offer reliable, smooth performance.

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Seldén Sw.Lock Dbl-Triple, Bbb/Mrb60
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Seldén

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Seldén Swivel Lock

An Swivel Lock insert is used to locate the shackle at 0 or 90 degrees. When removed the shackle spins freely. It is available for various block sizes as below.

£8.70 Price
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