Ridgid® 762 Adjustable Wrench measuring 12" is made of high grade chrome-vanadium alloy steel with cobalt-plated finish to ensure protection against rust as well as corrosion and has 1 5/16" jaw opening. Wrench is forged and heat-treated to ensure rough usage and durability. It contains jaw scales in SAE as well as metric to have a quick adjustment and new ergonomic cushioned grip handle for secure holding.