The Mac Tools R. B. R. T SXMHS7RBRT Metric and SXHS7RBRT SAE Short Hex Bit Driver Sets are high-quality hand tools designed for automotive use. This set includes 14 pieces of standard 3/8-inch drive size sockets with a chrome surface finish. It features both metric and SAE measurements, making it versatile for a variety of applications. These hex bit drivers are built by Mac Tools, a trusted brand in automotive tools, and are perfect for professionals and DIY mechanics looking for reliable and durable tools.