The Ronstan RF1317 Tie Ball 20mm is a versatile and lightweight rope stopper designed to improve control, safety, and handling in sailing applications. Its 20mm diameter offers a perfect balance between compact size and easy grip, making it ideal for a wide range of control line systems.

Manufactured from UV-stabilised, glass-fibre reinforced nylon, this tie ball is built for durability in New Zealand’s harsh marine conditions. The recessed cavity design securely holds stop knots, preventing slippage and ensuring clean, efficient rigging setups.

Commonly used on halyards, control lines, and spliced rope ends, the RF1317 prevents lines from running through blocks or fairleads while providing a comfortable grip for pulling and adjustment.

Key Features

• 20mm tie ball design for balanced grip and compact size
• Recessed knot cavity securely holds stop knots
• UV-stabilised, glass-fibre reinforced nylon construction
• Lightweight, corrosion-proof and maintenance-free
• Prevents rope pull-through in blocks and fairleads
• Ideal for halyards, control lines, and rigging systems
• Trusted Ronstan marine hardware quality

Specifications

• Diameter: 20mm
• Max Rope Diameter: approx. 5mm
• Material: UV-stabilised glass-fibre reinforced nylon
• Weight: approx. 3g
• Design: Textured grip with recessed knot cavity
• Application: Rope stopper / control line termination

Why Choose the Ronstan RF1317?  

For New Zealand sailors, the RF1317 offers a perfect mid-size solution between small and large tie balls. It provides improved handling without adding unnecessary bulk, making it ideal for dinghies, trailer yachts, and performance sailing setups.

Its durable construction and smart design make it an essential, low-cost upgrade that improves both safety and efficiency in everyday rigging systems.