Engineered for precision accuracy to assure consistency in food preparation. The measuring cup set is made of food-grade PP plastic and stainless steel, 100% rust-proof, and BPA-free. This measuring cup and measure spoons can be used safely for both solid and liquid ingredients. This measuring spoons set, dry measuring cups meets all your cooking and baking needs! It can be easily removed when you want to use a certain size measuring spoon and measuring cup.