Ronstan Series 55 BB Orbit Block, Double, Becket, Swivel

  • Sale
  • Regular price $125.00
  • Tax included.
  • In stock (2 units), ready to be shipped


  • Ultra Lightweight
  • Low friction 2-stage Orbital ball bearing system
  • Highest working load in its class
  • Low profile and compact
  • High performance cleating
  • Swivel shackle head for unlimited block rotation.
  • Stainless steel shackle head and compatibility with sharp fixing points.
  • Ultra low profile integrated beckets.
Sheave Ø 55 mm
Max. Rope Ø 10 mm
Max. Cable Ø mm
Pin Ø 5 mm
M.W.L. 750* kg
B. L. 1500 kg
Weight 172 g


Total block load. Load on becket not to exceed 33% of block load. ie. MWL 250kg (550lb), BL 500kg (1100lb).