SN guides are suitable for fly fishing rods.
The loop is made of stainless steel SS304 (chromium-nickel compound) and surface treated by PVD (Physical Vapor Deposition). It is a physical process, which is carried out in a vacuum, where the whole loop is applied a thin layer (plasma) of the titanium compound in black (TIBLACK). The result is a high quality loop with extremely high mechanical and chemical resistance and a very low coefficient of friction.