Chrome vanadium steel,hardened and tempered chromed and polished.Combination wrenches,one end conventional twelve sided ring,other open end offset at 15 degrees to handle.The sizes are 1/4 inc,5/16,3/8,7/17,1/2,9/16,5/8,11/16,3/4,13/16 and 7/8 inch af.Spanners are made by Draper Tools supplied in a compartmented vinyl wallet.[!brand :Draper!]