The set is organized by the manufacturer part numbers V, VV, and G, and it is made in the United States. The set includes sockets of various sizes such as 13/16in., 1-1/8in., 9/16in., 1in., 18mm, 17mm, 16mm, 15mm, 4mm, 14mm, 5mm, 13mm, 6mm, 12mm, 7mm, 11mm, 8mm, 9mm, 1/2in.