Selden Ball Bearing Block 20 Double, Stand Up

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Ball bearing blocks are used where the loads are more moderate and dynamic.  The ball bearings provide for good sheave rotation with the lowest possible friction.

Technical Features BBB20

  • Stainless steel strap to ensure high strength and stiff sides.
  • Stainless steel ball bearing races and glass fibre reinforced sheave for best bearing strength even under high dynamic loads.
  • Glass fibre reinforced polyamide composite.

Technical Features BBB20 Tie On and Cheek Block

  • Glass fibre reinforced composite cheeks.
  • Acetal ball bearings for light weight.
  • Glassfibre reinforced sheave.


  • Control lines on dinghies and keelboats.
  • Leech line applications on yachts.


Part# 402-101-15R - BBB20 DOUBLE, STAND UP

  • Weight: 35.00 g

  • Breaking Load: 400 kg
  • Safe working Load: 200 kg
  • System: BBB20
  • Comment: 2x MRT M4