Circle Shape Macaron Baking Silicone Mat Mold Muffin Tray Reusable Size: 39cm x 29cm (15.5" Lx 11"W) Outer Circle Diameter: 3.8cm (1.5") ; Inner Circle Diameter: 2.4cm(1") It can work at a temperature of -30~+260 Celsius Material: Silicone Can Easily make 48 Macarons and cup cakes at most at one time