Decorate your cakes, cupcakes, cookies, and pies with this Ateco 83 3/16" square 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 square shape, the possibilities with this versatile tip are endless! It is great for producing borders and outlines, as well as dropped-work. 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. Bringing you innovation and quality for over 100 years, Ateco, an August Thomsen brand, has been internationally known in the industry for creating baking tools of superior craftsmanship and design. By continually improving on tools, materials, and packaging, Ateco is dedicated to providing professional bakers with the kitchen essentials they need to succeed in an ever-evolving industry! Overall Dimensions: Opening: 0.17" Bottom Diameter: 11/16"