Dive Rite Tank Bands are tungsten inert gas welded (TIG) and have beveled edges that minimize scratching of painted tanks during assembly. They are constructed of 18-gauge, 304 stainless steel, with a #3 polished finish and 11-gauge, 304 stainless steel structural plates. 304 stainless steel is a high grade, low carbon alloy that resists corrosion, even in saltwater. Every band is precision sheared and punched and goes through a stringent quality control test during each step of the manufacturing process. Our bands also include an appropriately sized stainless steel all-thread bolt kit which is also made of 304 stainless steel. Made in the U.S.A.