Ronstan RF48100 Orbit 40mm Single Pulley – Swivel Top Sailing BlockThe Ronstan RF48100 Orbit Block is a 40mm single pulley with a swivel top, engineered for maximum strength, low friction, and minimal weightperfect for high performance dinghies, sportsboats, and small keelboats. Part of the Orbit Series, it features lightweight fibre reinforced polymer cheeks, acetal ball bearings, and a high strength stainless steel head for superior load capacity and durability. The swivel top allows for flexible alignment under

trailer boats and cruising vessels

and hose management systems

The multiplait construction ensures consistent performance and reduced wear

The Ronstan RF51300 is a compact

and hose routing

Why Buy the Burke Sailor Beanie from Barton Marine NZ

smooth rotation

NMEA2000 (compatible) interface

Charging Current: 6 A (automatic regulation)

while the lightweight ergonomic design ensures comfortable everyday use

Do they work well when wet

Built for serious marine performance