7-Piece Russian Piping Tips with One Coupler and One Silicone Pastry Piping Bag, SOOKOO Stainless Steel Ruffle Piping Nozzles Bobbi Skirt Icing Tips Set Cake Cupcake Decorating Supplies 7pcs Icing Tips + 1 Reusable Silicone Piping Bags + 1 Reusable Coupler. Material: Tips are made of Premium 304 stainless steel. FDA cerificate food grade, Eco-Friendly, Corrosion- Resistant and Durable, Easy to clean, Pastry bag is made of food grade silicone,easy to clean. Create beautiful ruffles, icing swirls, rosettes, flowers, barbie doll cake and other designs by these 7 decorating tips and your imagination. Tips are designed narrow than normal tips to make ruffles more pretty. Wildly use in cake, bakery, tray mats, party, hotel, etc. Using these nozzles tips to decorate your cakes and cookies.