Cake Decorating Tube Tip 57 - Decorate your cakes, cupcakes, cookies, and pies with this Ateco 57 oval pastry tube. Made of durable stainless steel, this tube is rust-resistant and designed to withstand repeated use without bending out of shape. With an oval shape, this versatile tip is perfect for outlining, dropped-work, and even writing! It is also compatible with the Ateco 400 coupler and Ateco 407 coupler, making it easy to switch tips without changing the pastry bag. 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: 0.17" Bottom Diameter: 11/16"