Mixing Bowls with Airtight Lids, AOKIWO 26Pcs Stainless Steel Bowls Set, 3 Grater Attachments & Black Non-Slip Bottoms Size 7, 4, 2.5, 2.0,1.5, 1QT, Great for Mixing & Serving AOKIWO bowl set is made of high quality, heavy weight stainless steel that ensures safety and durability. They are rust-resistant, sturdy structure and durable for daily use. Airtight lids fit each bowl size, you will never worry lid will warp or shap