The Milwaukee 48-22-9486 106pc Socket Set with PACKOUT Case is a versatile and durable tool set designed for professionals and DIY enthusiasts. Made of high-quality alloy steel, this socket set includes both SAE and metric sizes, with a 3/8 inch size for added versatility. The ratcheting action and wear-resistant features make it easy to tackle tough jobs without worrying about tool damage. Backed by a lifetime manufacturer warranty, this set is a reliable addition to any workshop or tool collection.