This 100-piece socket set from Snap-on is perfect for general service work. The set includes both metric and SAE sizes, with a range of sizes from 4mm to 15mm and 3/16in. The set comes in a sturdy case and includes extensions, ratchets, sockets, adapters, and universal/swivel tools. The sockets are made with a 6-point drive type and a chrome surface finish. This high-quality set is made in the United States and is a must-have for anyone working on cars or other vehicles.