The Planter molds and the coaster molds are fully matched. These Planter molds are used to make Plant pot, Flower pots, DIY Flower Pot Molds, planter pot mold or some other decorations. Size of 3 Planter Molds--Cube Mold: Internal Width 2.87", internal depth 2.95", Need 8.6 oz resin to fill it.