Welcome to Azzuro, where baking dreams come to life. Make the most of your family bonding moments in the kitchen with our piping bags disposable 12 Inch that come with a seamless design for decorating pastries. Enjoy a happy baking experience with our pastry icing piping bags create beautiful treats together. Giving you freedom to create flowers, stars, and unique patterns on cake whether you use tips or not How to Use Piping Bags: · Put the coupler/tip on pastry bag · Cut extra part of icing piping bags at bottom · Attach tip on bottom end and screw other part of coupler · Fill in cream then twist end of cake decorating bags to close it Pls Don't Forget! You can use it without coupler or tips.