ISO BU252 Type 304 Stainless Steel Buckles 1/4" - 100 per Box. It Straps On, Inc., Type 304 buckles are used with ISO band, won't oxidize and are corrosion resistant except in the most demanding environments. ISO is an American manufacturer and our stainless steel is melted and manufactured in the USA to ASTM Standards. It Straps On, Inc. products are a perfect choice anytime your application requires strength, durability and corrosion resistance. Easily installs with ISO band using the following tools: Cool Tool #TOO1, Ratchet Tensioner #T101, and Tensioning Tool #T1916