This vintage Craftsman socket set includes three pieces with a 3/8" drive size and a deep fit of 16mm, 18mm, and 19mm. The sockets are made with a chrome surface finish and are compatible with a 6-point drive type. The set comes with a standard socket type and a lifetime warranty. The manufacturer part numbers for this set are 44433, 44435, and 44436. The tools included in this set are perfect for automotive use and are manufactured in the United States. The set is a great addition to any tool collection and is sold as a single item.