SpinRX &ndash; Tangle Proof Swivel Pulley &ndash; Boat Anchor Pulley &ndash; Anchor Pulley for Drift Boat &ndash; Pulley Block - Made in USA CNC MACHINED. CNC machined boat anchor pulley from solid, aerospace-grade aluminum. The SpinRx is machined (not cast) which increases the overall durability and strength of the product. This product is designed to last and is able to withstand the abusive environment that an anchor is subjected to. HARD ANODIZED. The SpinRx is hard anodized for better corrosion and wear resistance. Anodizing hardens the surface of the aluminum which makes our product bomb proof. This product is both lightweight and extremely durable. ALL STAINLESS STEEL HARDWARE. The SpinRx incorporates all stainless steel hardware which allows the product to be used in both fresh and salt water environments. The stainless steel hardware combined with the anodized aluminum components prevents corrosion and increases the life of the SpinRx. This product will not rust! SEALED BALL BEARINGS. The SpinRx contains two sealed roller bearings which allow the anchor to spin independent of the anchor rope. These roller bearings are sealed, keeping out dirt and sand, and require no lubrication over the lifetime of the pulley. These bearings are high quality, stainless steel bearings, and will not rust. MADE IN USA. Our product is proudly designed, manufactured, and hand assembled in the USA. We stand behind our product and are proud to give you a high-quality, American-made product.