Bubble kit includes: x1 microperforated ring (9.25'' L x 4'' W) plus x1 silicone mold. Create pastry base with the silicone mold of six cavity and make a mousse / cream to lay over the shortcrust pastry. The rings are non-stick and stainless. They allow an homogeneous baking. Ring material is crush-proof. Microperforated ring baking suitable up to 356°F (180°C). Silikomart products are characterized by extreme versatility. Suitable for oven, refrigerator and blast chiller too. Elasticity / flexibility enable flexion to save space for storage. All molds are washable in dishwasher. Guaranteed for frequent use.