1. This outdoor fishing reel grip knob is specially designed for outdoor enthusiasts and is suitable for the handle modification of baitcasting reels and spinning reels. It is made of engineering plastics, which is sturdy and durable and can withstand the tests of various complex outdoor environments, providing reliable support for your outdoor fishing activities. 2. In terms of design, it is exquisitely made. The surface is treated with electroplating technology, presenting a smooth and shiny texture. This not only enhances the overall aesthetics but also improves the corrosion resistance of the grip knob and extends its service life. 3. This product is equipped with two installable bearings with a diameter of 4 millimeters, including a dedicated high - speed silent bearing of 4 * 7 * 2 millimeters and a dedicated high - speed silent bearing of 4 * 7 * 2.5 millimeters. The design of the high - speed silent bearing makes the spinning reel run more smoothly and quietly, effectively reducing noise interference and enhancing the user experience. 4. Whether in the tropical lakes of Africa, the serene rivers of Europe, the beautiful coasts of South America and Southeast Asia, the cold waters of North America and Northeast Asia, or the unique fishing grounds in the Middle East, it can accompany you to enjoy the fun of fishing. In addition, the brand has an authorized self - owned brand, and its quality is trustworthy. Bring this grip knob and start your wonderful outdoor fishing journey!