1. This mixing bowl set is made of 304 stainless steel material, which is corrosion-resistant. The interior features a mirror polished design for easy cleaning and sanitation, while the exterior features a fingerprint-resistant matte brushed finish to resist scratches, enhance durability, and prevent rust 2. Each bowl comes with a silicone bottom that provides a firm grip and holds it firmly in place to prevent sliding on your countertop. It also reduces noise, acts as a thermal insulator, protects your countertop from the heat generated during blending or cooking, and minimizes potential damage to kitchen surfaces. The overall stability and control it provides contributes to a more enjoyable and efficient kitchen experience 3. Our lid is designed to fit snugly over the bowl, helping to preserve the freshness of your food by isolating air and moisture. It prevents spills and leaks, ensuring your food remains sealed during storage to reduce food waste. The 5QT bowl main lid comes with a removable lid, allowing you to add ingredients or pair with a blender without having to remove the entire lid. We also offer 3 different graters (shred, slice and grate) 4. [14 Pieces Accessories & 6 Bowl Sizes] 6 sizes of mixing bowls, 1.1, 1.5, 2.1, 3.5, 4 and 5 QT large capacity, equipped with 3 grater attachments, 6 measuring spoons, basting brush, small spatula, tongs, spreader spatula, whisk, multi-purpose mixing bowl set for salad, eggs, dough, vegetable washing and storage, meet all your daily kitchen needs