Yingwei Blue Disposable Icing Piping Cake Pastry Tip Cupcake Decorating Bags Tool Disposable Icing Piping Cake Pastry Tip Cupcake Decorating Bags Tool Size 31.2*16.8cm bag mouth dia1.4cm Error Size 1cm it did work perfectly ,save labour and easy to use cupcake making Package include 1pc