This versatile marine sealing gasket set includes between 50 to 400 copper washers, all sized at M5. Designed to ensure optimal sealing performance in marine environments, these washers are crafted from high-quality copper, offering excellent corrosion resistance and durability. Ideal for a wide range of applications, they provide a reliable solution for preventing leaks and ensuring secure fittings in various marine equipment and assemblies. Whether for maintenance, repair, or new installations, this set offers the perfect assortment to meet different sealing needs effectively.