Ronstan Series 40 Single Upright Lead Block - High Load

The Ronstan Series 40 Single Upright Lead Block is designed for high-performance sailing applications. Its low profile and robust construction ensure that halyards and rigging controls can be efficiently managed at the mast base. Made with durable materials, this block is perfect for both professional and recreational sailors looking for reliable performance.

• Low Profile Design: Ideal for leading halyards and rig controls without adding unnecessary height.
• High Load Capacity: Engineered for demanding applications, ensuring durability under pressure.
• Wear-Resistant Sheave: Features lightweight, self-lubricating polymer suitable for rope or wire.
• UV Stabilized Materials: Ensures longevity and performance even in harsh marine environments.
• Applications: Commonly used for halyards at the mast base.