This product is a set of four Snap-on tools with a 3/8 drive size, including sockets for 3/8, 7/16, 1/2, and 9/16 swivel socket sizes. The sockets are chrome finished and feature a 12-point design. The manufacturer part numbers are FVU 20, 18, 16, and 14. Perfect for automotive maintenance and repair, these high-quality sockets from a trusted brand like Snap-on are a valuable addition to any toolbox.