Endo Shoji ATM07021 Commercial Egg Tofu Pot, 8.3 inches (21 cm), Kanto Type, Main Body, 18-8 Stainless Steel, Made in Japan

Is there a removable inside tray to make taking out the cake easy?

Can you bake with this?

Are the sides completely straight? Are the top and bottom dimensions exactly the same size (no outward slant from top to bottom)?

Will I receive three different sized molds? If so, what are the dimensions of each mold?