Ronstan RF56331 Orbit 55 Triple Ratchet Block – Becket & CleatThe Ronstan RF56331 Orbit Series 55 Triple Ratchet Block is engineered for high performance sailing applications, offering exceptional strength to weight ratio. Featuring a 55mm sheave, this triple block accommodates rope diameters up to 10mm. Its 2 stage orbital ball bearing system ensures low friction and high load capacity, with a maximum working load of 500kg and a breaking load of 1000kg. The integrated becket and cleat provide versatile rigging

and utility use

ideal for long-term marine use

The quick fix allows easy removal of WINDEX Dinghy without using any tools

steady combustion

UV-stable and corrosion-resistant construction

RIBPort or RailMount

Rechargeable lithium-ion battery

Mounts with brass stud and nut provided

Large laser‑drained front pocket for essential items

Fueltreat Biocide BC-250 stops any chance of getting the bug or diesel problems again

Full stainless steel construction

Non-marking marine-grade rubber construction