The AAT Clamp is now available for order and ship. QCBC AAT Clamp is made in the USA, of a Zinc Alloy that is relatively corrosion resistant which means it can be used in a wet and dry location without fear of rusting or corroding over time. Zamak 3 is a zinc-based alloy that is strong and durable. Zamak 3 is resistant to corrosion and wear, making it ideal for outdoor use and perfect for marine use for secure connections.  The AAT clamp is designed to work with 4 AWG wire.