The Craftsman 8pc 6pt 3/8" Drive Metric Sockets set includes sockets ranging in size from 9mm to 17mm. These standard sockets feature a chrome surface finish and are designed for use with SAE and metric systems of measurement. The set also includes a quick turn band, for fast on/off spinning and sure grip. Made in the United States, this high-quality set of sockets by Craftsman is a valuable addition to any automotive tool collection. If used, it wasn't much, package is yellowed.