This 12 piece Snap-on metric socket set comes with sizes ranging from 8mm to 18mm and a 3/8in. drive size. The set includes a PAKTY231 mag tray for easy storage and organization. The sockets are 6 point and made with a chrome surface finish. The manufacturer part number is FSM. This set is perfect for automotive work and other mechanical projects that require metric socket sizes. It is a high-quality set made in the United States, and the sockets are all in excellent working condition. Bid with confidence knowing that you are getting a great set of Snap-on sockets for your toolbox.