Ronstan RF45110 40mm Single Pulley Block – Swivel Head with BecketThe Ronstan RF45110 is a high performance 40mm single pulley block featuring a swivel head and integrated becket, designed for versatile rigging setups on dinghies, keelboats, and small yachts. Built with acetal ball bearings, a UV stabilised sheave, and reinforced glass fibre cheeks, this block delivers low friction operation and excellent strength to weight performance. The swivel head allows for optimal alignment under load, while the becket

Fynspray WS63B rocker pump – black finish

the SC170N with harness offers comfort

Universal head allows flexible mounting and optimal alignment

✅ Self-polishing formulation – reduces paint build-up

The RF4012 features a clear viewing window

In more demanding

Pair with TruDesign Aquavalve hose tails for correct sealing

Free-swivelling

Low-profile design – ideal for tight rigging setups

Ideal for dinghies

club racing

high-density 100mm round polystyrene float (16mm centre hole)—ideal as a grab float or locator for fishing lines