ISO SB021 Stainless Steel Bull's Eye Sign Mounting Brackets, Flared Leg w/Stainless Steel Bolt & Washer, 50 per Box. It Straps On, Inc., Stainless Steel Bull's Eye Flared Leg sign brackets are used with ISO strapping bands, 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 #T001, Ratchet Tensioner #T101, Self-Opening Spring Cutter #T502, Medium Band Cutter #T545, Tensioning Tool #T1916 and Crimping Tool #T1952