Ronstan
Ronstan RF45110 40mm Single Pulley Block – Swivel Head with Becket
The Ronstan RF45110 is a high-performance 40mm single pulley block featuring a swivel head and integrated becket, designed for versatile rigging setups on dinghies, keelboats, and small yachts. Built with acetal ball bearings, a UV-stabilised sheave, and reinforced glass fibre cheeks, this block delivers low-friction operation and excellent strength-to-weight performance.
The swivel head allows for optimal alignment under load, while the becket enables a two-part control line or fixed end for more flexible rigging. Ideal for use in mainsheets, vangs, and general control systems where durability, efficiency, and smooth operation matter.
Specifications:
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Sheave Diameter: 40mm
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Max Rope Diameter: 10mm
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Material: Acetal sheave, ball bearings, glass fibre reinforced nylon cheeks
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Configuration: Single block with becket and swivel head
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Applications: Mainsheets, vangs, control lines, multi-directional rigging
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Features: Low-friction, corrosion-resistant, compact & efficient
A reliable, adaptable block trusted by sailors for high-performance sailing and cruising. Available now at Barton Marine NZ, your official source for Ronstan sailing and rigging hardware.