Stackable Serving Cooking Mixing Prep Clear Glass Bowls, 3.5-Inch in set of 4 ,4-Inch in set of 3 and 6-Inch Set of 1. Get them all and cook like they do on TV cooking shows. It's so much easier to create that special meal with these fine little ingredient bowls/mini prep bowls. Clear tempered glass bowls are just the perfect size to measure out ingredients before hand and have them all lined up. They stack nicely for storage with their concentric rings. These are amazing bowls and take up very little room to store!