Nitori stainless steel bowl set of 3 + a colander. The bowls are 18cm, 21cm, and 24cm in diameter. Only the 24cm bowl has a non-slip base on the bottom. The colander is only compatible with the 24cm bowl. I am selling these because I have replaced them with glass bowls. There are no noticeable scratches or stains, but please understand that these are used items before purchasing. Model Numbers: 18cm bowl: 8971583 21cm bowl: 8971584 24cm bowl: 8971585 24cm colander: 8971591 It seems that the items are discontinued except for the colander (similar products are available).