This is a set of 3 mini masu: mini, mini-mini, and mini-mini-mini. The mini masu with "一升 (issho - one sho)" written on it has an outer side length of about 6cm. The one with "五合 (gogō - five gō)" written on it is about 4.7cm. The one with "一合 (ichigō - one gō)" written on it is about 3.5cm. These are new and unused, but have been stored at home for a long time, so there may be stains and dirt. Please understand this before purchasing.