Ronstan RF20151A Cheek Block 20mm – Series 20 Ball Bearing PulleyThe Ronstan RF20151A Cheek Ball Bearing Pulley Block (20mm) is a compact, high performance fixed mount block designed for efficient control line routing on modern sailing boats. Engineered as part of the proven Series 20 range, this block features a 20mm acetal sheave running on precision stainless steel ball bearings, delivering smooth, low friction performance under load. The cheek block design allows for permanent mounting directly to decks, masts,

right-of-way

it’s ideal for managing DC systems on yachts

and lightweight

The Ronstan RF20151A Cheek Ball Bearing Pulley Block (20mm) is a compact

UV-resistant acetal sheave for smooth

designed for light-load sailing applications

multi-angle control line systems

Trusted Harken performance

The Harken 16mm Single Block with Becket (405) is designed for ultra-light control line applications on small boats such as dinghies

it’s safe for fibreglass

friction-free operation

The Reid Rubber Straight Roller – 230mm is a heavy-duty boat trailer roller built for smooth