This Cornwell double open end wrench is a must-have for any automotive tool kit. It's perfect for tightening and loosening nuts and bolts with measurements of 9/16"×5/8". Made by Cornwell, a trusted brand in the industry, this wrench is designed for SAE measurements and is a single item purchase. It does not come with a warranty, but rest assured that you are getting a reliable tool from a reputable manufacturer. Add this wrench to your collection today!