These pie plates are made from sturdy and thick glass! Please note that this glass is suitable for use in 0-100 ℃! Our clear pie dish allows you to keep an eye on your baking progress without interrupting the process. Package Included: our package includes 4 packs of mini glass pie plates for baking; The baking pie pan has about a 6 inch bottom diameter and about 1.4 inch depth meets your baking needs! It features about an 11.6oz capacity, suitable for small pies!