The Ronstan S40 BB Exit Block, HHL #RF45711HL is designed to reduce friction when lines exit masts, booms, or pass through the deck. This exit block is built to handle high dynamic or static loads, making it a reliable choice for sailors. Its sleek design and durable construction make it an essential component for any sailing enthusiast. The RF45711HL exit block features a sheave and bearing race made from Grade 2205 stainless steel, ensuring strong and long-lasting performance. The ball bearings are crafted from Grade 304 stainless steel, adding to its robust nature. The anodized aluminum housing provides a sleek and corrosion-resistant finish, ideal for the harsh marine environment. Our Part # RONRF45711HL | Mfr. Part # RF45711HL