Ronstan RF20111 Single Block with Loop Head & Becket 20mm – Series 20 Ball Bearing PulleyThe Ronstan RF20111 Single Loop Head Ball Bearing Pulley with Becket (20mm) is a compact, high performance Series 20 block designed for efficient control line systems on modern sailing boats. Featuring a 20mm acetal sheave running on precision stainless steel or Torlon ball bearings, this block delivers exceptionally low friction and smooth operation, making it ideal for frequently adjusted control lines. The loop head attachment allows flexible

✔ Applications: main/jib sheets

and control line setups

Engineered for serious anglers and serious boats (up to 12 m / 38 ft)

Sheave Ø 55 mm

Ronstan RF41100 Single Swivel Pulley specifications:

and halyards on keelboats and performance yachts

Grunt Supawax 500ml is a premium marine polish and protective wax designed to restore and protect gelcoat

Perfect for responsive

or as part of a multi-line system on larger yachts

A must-have for serious fishers with limited space

and coastal landmarks

and optimal alignment in any lightweight control system