The warmth of natural wood and the finest texture of the real wood and the precision rotation provided by a precision metal liner reduces the risk of uneven rotation caused by the weather and seasonal conditions where the wood knob neck is extremely low rattling and provides ultimate retrieval sensitivity in all weather conditions. The interior of the wood knob has a separated metal liner insert. The middle of the knob is as thin as possible, preventing the wood from rotating poor rotation due to changes in swelling due to rain. The type is close to the original handle knob, and there are two types of A type that is thick enough for a firm grip, and a thin B type that emphasizes retrieval sensitivity. All of them are premium quality. Every single piece of material and accuracy are never compromised. Since its launch, the handle knob has been captivating many users for many years. It is especially popular by executive classes and many experts who love the real thing. Compatible with a wide variety of reels including Shimano and Daiwa and external handles, as well as dedicated end screws and mounting tools, as well as many custom parts and adjustment shims are included. It is compatible with the original spinning and baitreel handles of common new and old small Shimano and Daiwali reels and external handles, but some models may not be compatible. It has a certain degree of corrosion resistance and can be used with salt, but it is not completely rust resistant. Please wash it with water and apply oil to each part of the bearing. The oil may come out and become whiter after use in the rain. Regularly apply and polish with "Shirokuma Drag Grease" to increase the depth and water resistance.