This teng tools 17 piece set consists of regular 6 point 12inch drive sockets the sockets are made from chrome vanadium steel for strength and durability and have a satin finish they are supplied complete in a handy storage tray the tentt1217 set contains the following sizes of 12inch drive sockets10mm 11mm 12mm 13mm 14mm 15mm 16mm 17mm 18mm 19mm 20mm 21mm 22mm 24mm 27mm 30mm and 32mm