Experience smooth sailing with the Ronstan Series 20 Ball Bearing Block. This single block features a robust loop mount design, ensuring easy attachment to your rigging system. Its high-quality ball bearing mechanism provides minimal friction, enhancing performance and efficiency. Crafted from durable materials, it withstands harsh marine environments while maintaining lightweight portability. Ideal for both cruising and racing, the RF20184 is a reliable choice for sailors seeking superior control and ease of use. Upgrade your sailing gear with this essential block for a seamless experience on the water!