The BlueSpot 15307 25 Piece Metric and Imperial Hex Key Wrench Set with Pouch is manufactured from hardened and tempered carbon steel for increased durability. The set includes a handy pouch for quick and convenient storage. Contents: Short series metric size: 1, 1.5, 2, 2.5, 3, 4, 4.5, 5, 5.5, 6, 7, 8 & 10mm. Long series imperial AF size: 3/64in, 1/16in, 5/64in, 3/32in, 7/64in, 1/8in, 9/64in, 5/32in, 3/16in, 7/32in, 1/4in & 3/8in. Storage pouch.