Ronstan RF56510 Series 55 Ratchet Orbit Block Fiddle Becket Swivel Head

Ronstan RF56510 Series 55 RT Orbit Block is a high-performance, lightweight fiddle ratchet block featuring an integrated ultra-low-profile becket and a grade 316 stainless steel swivel shackle head.

Engineered for serious racing and high-load setups, it allows sailors to choose between automatic and manual ratchet engagement modes. In automatic mode, the ratchet engages under load to hold line tension and disengages when released for seamless, free-running easing.

Ronstan RF56510 55mm Orbit Ratchet Single Pulley, Fiddle, Becket, Swivel specifications:

• Max. Rope 6-10mm
  
• M.W.L. 250 kg
• B. L. 650 kg
• Weight 112 g