Construction: It is made of 304-grade stainless steel for long-life service, a very high-quality material. It is durable and long-lasting, non-marring, durable quality that protects your boat’s finish, and suitable for boats, marines, yachts, and so on. Features: This product has abrasion resistance, chemical resistance, high strength, high elasticity, low pressure, abrasion resistance, strong shock absorption, tear resistance, radiation protection, and high load and buffering characteristics. The captive ball lock pin holds the line or chain securely in the channel., and easily raises and lowers the anchor without damaging the topsides. Package Includes Pack of 1 MARINE CITY 304 Grade Stainless Steel Boat Bow Anchor Roller Holder.