The Snap-on 21 Piece SFSM 6 Point Deep Well Socket Set includes sockets ranging in size from 13-26mm, all with a chrome surface finish for durability. This set is designed for use with a 3/8 inch drive, making it versatile for a variety of automotive applications. With the Snap-on brand known for quality and reliability, this socket set is a valuable addition to any mechanic's toolbox.