This wrench is a specialty tool with an open-end that can be used to tighten nuts and bolts. Made in the USA with the highest quality materials, this wrench is an excellent addition to your toolbox. The wrench comes with a drive type that is suitable for multiple applications. The warranty for this product lasts for an unspecified length, giving you peace of mind when purchasing. The set is a single item with one wrench that is perfect for working on any automotive vehicle.