This combination of the PolarWave 18 mm lightweight block and the Marlow 2.5 mm Dyneema SK78 soft shackle is the perfect solution for attaching the clew of your sail. Lightweight, extremely strong, and designed for high-performance dinghy sailing, this setup offers smooth rotation, minimal friction, and exceptional durability.

The PolarWave block delivers high load capacity with a reinforced fibre body and stainless steel bearing components, while the Marlow soft shackle provides a safe, corrosion-free alternative to metal shackles. Together, they create a clean, efficient, and reliable clew attachment system suitable for ILCA and other performance dinghies.

Key features

• Complete clew attachment kit: 18 mm block + soft shackle

• Soft shackle made from Dyneema SK78 D12 (2.5 mm)

• Smooth rotation thanks to ceramic bearing

• No metal shackles needed, reducing weight and eliminating corrosion

• Ideal for ILCA clew 

• Simple to install and easy to inspect

Why this combo works

The soft shackle provides a flexible, lightweight connection with zero metal contact, while the 18 mm PolarWave block ensures effortless trimming. This combination is a favourite among sailors who want the cleanest and most efficient clew rigging setup possible.