Ronstan RF55111 55mm Single Block with Becket | Series 55 Sailing PulleyThe Ronstan RF55111 is a rugged, high performance 55mm single block with integrated becket, designed for medium to heavy load control systems on keelboats, dinghies, and performance yachts. Part of the reliable Ronstan Series 55, this block delivers smooth, efficient operation and exceptional durability in demanding marine environments. The UV stable acetal sheave ensures low friction line handling, while the becket provides a convenient tie off point

Gear Ratio 1st speed - 2

Suitable for use on boats

legal voyages in NZ coastal waters

Marine-grade stainless steel cheeks for durability

With its compact footprint and versatile design

stainless‑steel device that makes raising heavy anchors effortless—no winch needed

The integrated stand-up base keeps the block upright during operation

316 stainless steel cheeks for marine-grade strength and corrosion resistance

entering Wellington

Galvanised Danforth-style sand anchor

The Ronstan RF41300 is a compact and efficient 40mm triple pulley block with a non-locking swivel shackle head

UV and abrasion resistant material