The Snap-on Tools OEX100 5/16” Combination Wrench is a high-quality hand tool made in the USA. It features a 12 point drive type and SAE system of measurement, making it ideal for automotive and industrial applications. This single item set includes one combination wrench with a size of 5/16 inches, perfect for tightening and loosening nuts and bolts. It is a durable and reliable tool that comes with a manufacturer part number of OEX100, ensuring compatibility and performance.