Ronstan RF20202 Double Ball Bearing Pulley 20mm – Series 20 BlockThe Ronstan RF20202 Double Ball Bearing Pulley (20mm) is a compact, high performance Series 20 block designed for efficient control line systems on modern sailing boats. Featuring twin 20mm acetal sheaves running on precision stainless steel ball bearings, this block delivers exceptionally low friction and smooth operation, making it ideal for dynamic sailing applications such as vangs, cunningham systems, and traveller controls. The RF20202 includes

Supplied with a removable handle and high-quality construction

Offshore & coastal sailing

✅ Suitable for trailer boats

Designed to be easy to mix and apply

the go-to destination for premium boat fittings and marine accessories

low-friction bearing system

The Raymarine ST1000+ provides:

and waterline scum

With a compact and discreet design

Launches & trailer boats

Supawax → Locks in shine and adds protection

withstanding years of use in salt and sun