The Metric socket assortment includes 12 sockets made of chrome molybdenum steel. The set is compatible with various sizes of sockets and hand tool accessories. This group includes 5 ea. shallow sockets which are a 1/4" drive 5.5 mm (Allied Brand) socket; 4 ea. 3/8 drive 6-point sockets (11, 12, #43543, #16559 A8, & 13 mm #13545 (Craftsman) and a 6-point shallow 14 mm #3204M Blackhawk socket. There are 7ea. deep sockets, 3 ea. are 3/8" drive and 4 ea. are 1/4" drive. The deep 3/8" drive sockets are a 19 mm 12-point (THORSEN), 6-point 12 mm unbranded, and a CRAFTSMAN 6-point 10 mm socket #44426.The 1/4" drive deep sockets are a 6-point deep 9 mm #20609 (HUSKY), a 6-point 8 mm #44405 a 7 mm #34621 (CRAFTSMAN) and a 7/32" #1801160 (GEAR WRENCH) socket. These tools are name brand high-quality tools designed for professional use in various industrial applications, backed by the Tool Makers brand, warranty, and reputation.