Ronstan RF20175 Pivoting Lead Block with Cleat – 20mm Ball Bearing PulleyThe Ronstan RF20175 Pivoting Lead Block with Cleat is a compact, high performance all in one control system combining a 20mm ball bearing pulley, pivoting base, and integrated cam cleatperfect for modern sailing setups. Designed for efficiency, the RF20175 features a low friction 20mm ball bearing sheave, ensuring smooth and responsive line movement even under load. The pivoting base automatically aligns with the load direction, improving performance

Strong four-post design for extra stability

making it ideal for dynamic sailing applications

Lightweight and flexible for active use

Coastal passage making

or any configuration requiring a multi-purchase setup in a compact format

low-friction performance in tough marine conditions

Engineered for New Zealand boating conditions

Mounting: Twin eyelets for horizontal or vertical use

Its ergonomic Euro-style design and manual pump make it easy to use and maintain

followed by oxidation removal (Klenashine) and protection (Supawax) for best results

The 120° angled design allows for a smoother transition than standard 90° fittings

Ideal for NZ sailing and coastal conditions