Blocks & Pulleys, Ball Bearing

Blocks & Pulleys, Quad, becket, swivel shackle head, Series 55 - RF55410

Blocks & Pulleys, Quad, becket, swivel shackle head, Series 55 – RF55410

MSRP $199.95

In Stock

Bulk Orders
SKU: RF55410. Categories: , .

Quad, becket, swivel shackle head

  • Mainsheet systems on dinghies, sportsboats and small keelboats to 9m (30ft)
  • Spinnaker sheets on dinghies, sportsboats and small keel boats to 9m (30ft)
  • Halyard, Vang and Backstay application on boats to 8m (26ft)
  • Control line applications on larger yachts
  • Mainsheet systems and spinnaker sheets on dinghies, catamarans, sportsboats and small keel boats to 9m (30ft)
  • RF55410 when paired with a RF56330B and a RF35101 lashed to the becket produces a powerful 8:1 mainsheet system for use on catamarans to 5.5m
  • (18ft). This can be increased to 9:1 by replacing the RF35101 with a RF35202
  • Halyard, vang and backstay applications on boats to 8m (26ft)
  • Control line applications on larger yachts

Sheave Ø :  55 mm
Max. Rope Ø :  10 mm
Max. Cable Ø :  mm
Pin Ø :  mm
M.W.L. :  750* kg
B. L. :  1500 kg
Weight :  316 g


  • Ball bearings - High compression strength carbon black Acetal
  • Stage 2 bearing - Carbon fibre reinforced, PTFE impregnated Nylon
  • Frame/Cheeks - Toughened, glass fibre reinforced Nylon
  • Rope Link: UV stabilised, multi-strand impregmented SK75 Dyneema®
  • Head fitting: grade 316 stainless steel
  • Ball Bearings: high compression strength carbon black Acetal
Ronstan International Inc
45 High Point Avenue, #2 Portsmouth
Portsmouth Rhode Island 02871
+1 (401) 293 0539 $$$
Ronstan International Inc
45 High Point Avenue, #2 Portsmouth
Portsmouth Rhode Island 02871
+1 (401) 293 0539 office@ronstan.us