Cake Decorating Tube Tip 899 - Decorate your cakes, cupcakes, cookies, and pies with this Ateco 899 curved petal pastry tube. Made of durable stainless steel, this tube is rust-resistant and designed to withstand repeated use without bending out of shape. With a shell shape, this tip is perfect for creating oceanic-themed designs on your pastries in a matter of seconds! Using the right style pastry tube for the job will enhance your presentation to draw patrons' attention to your display cases and plated desserts. Overall Dimensions: Opening: 0.69" Bottom Diameter: 1 3/8"