Ronstan Series 19 Utility Block™ - Single - Ferrule Eye Head

The Ronstan Series 19 Utility Block — Single — Ferrule Eye Head is a precision rigging component purpose-built for sailors, boaters, and anyone who demands reliability in challenging marine environments. Whether you're managing halyards, outhaul systems, or load-bearing applications on deck, this single block serves as the foundation for efficient mechanical advantage and safe line handling. Its compact footprint and ferrule eye design make it ideal for retrofit installations where space is at a premium and integration with existing shackle systems is essential.

Ronstan engineered this block with stainless steel cheeks paired to Acetal sheaves, a combination that delivers exceptional corrosion resistance and low-friction performance with virtually zero maintenance demands. The hollow rivets in the block heads accept standard shackles, allowing you to add beckets for increased purchase and system flexibility without modifying the base unit. The ferrule eye head provides a secure, corrosion-proof attachment point that maintains integrity under sustained tension and repetitive cycling—critical factors when working with sail trim, boom control, or cargo systems.

This block is best suited for dinghy sailors, cruising vessel crews, and commercial boaters who value longevity and simplicity in their rigging hardware. Its lightweight construction (0.05 lbs) means minimal weight aloft—a real advantage on performance boats where every ounce matters. The Series 19 Utility Block integrates seamlessly with standard marine shackles and beckets, making it a drop-in solution for upgrading aging blocks or expanding multi-part mechanical systems without requiring specialized tools or fabrication.