The size range of the cups and the spoons is impressive (cups 1/8, 1/4, 1/3, 1/2, 2/3, 3/4 and 1 cup; spoons: 1/8, 1/4, 1/2, 3/4, 1 teaspoon and 1 tablespoon) HOWEVER, these are NOT metric; i.e the cup is 240 mL not 250 mL, the 1/2 cup is therefore 120mL not 125 mL; the tablespoon is 15 mL not 20 mL, so if you are following Australian recipes, just be aware you have to add I twee bit more. Otherwise, solid, and can be put all together with a ring for both cups and spoons. As for the ‘stainless’ part, it ids far to early to tell.