Introducing the Ronstan Series 40 Ball Bearing Block with a double configuration and becket, designed for superior performance on the water. This block features a swivel head that allows for smooth and efficient line handling, making it perfect for various sailing applications. The high-quality ball bearing system ensures minimal friction, enhancing your sailing experience. Constructed from durable materials, it withstands harsh marine environments while maintaining its lightweight design. Upgrade your rigging setup with the RF40210 and enjoy effortless control and reliability on your next adventure!