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Regularly: $0.99/Each

Other Available Sizes:

  • Eliminates the need to empty your decorating bag before changing tips
  • Made of durable, white plastic
  • Securely fastens pastry tip (sold separately) in place
  • Accommodates 9/16", 5/8", and 11/16" pastry tubes
  • Ideal for bakeries and cafes
  • Ridged sides along ring for easy assembly

UPC Code:




Usually Ships in 1 Business Day
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Color White
Material Plastic
Shape Round
Size Large
Type Couplers


This Ateco 404 white, large coupler allows you to interchange standard sized tubes and small tubes without emptying the contents of your decorating bag to save time and labor. It accommodates 9/16", 5/8", and 11/16" pastry tubes. In addition, ridged edges on the ring allow you to easily assemble the coupler to the base with minimal effort. Ideal for bakeries, cake decorators, coffee shops, and anywhere else you need to decorate baked goods, this plastic coupler will get the job done!

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:
Top Diameter: 1"
Bottom Diameter: 1 3/8''
Height: 2 3/16''

Pastry Tube Chart Pastry Tube Chart

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Compatible Models

This item is compatible with the listed models, according to the manufacturer. We do our best to keep this listing as accurate and up-to-date as possible. If you have any questions or concerns, feel free to contact a Customer Solutions Specialist before placing your order.

Customer Reviews

  • Overall User Rating: Ateco 404 2-Piece Large Plastic Coupler (August Thomsen)

    4.9 stars from 118 reviews


    People Talk About:

    tips large coupler GREAT pastry bags Ateco bag couplers easy

    I love this large coupler. It works well with all the larger tips that I couldn't find a coupler for. It's very sturdy and holds up really good. Very easy to wash, and overall just awesome.

    Posted on

    Very nice coupler.

    Ateco has the best couplers and these large ones are no different. Good bevy plastic with nice even grooves. Buy these in bulk with piece of mind.

    Posted on

    This is a very large tip and proved to be unnecessary for most uses of a pastry bag.(Whipped/butter cream) But for thicker items, such as potatoes it is essential.

    Posted on

    The Ateco 404 2-Piece Large Plastic Coupler (August Thomsen) is excellent. I didn't even know these existed until I noticed them on this site. They make changing out the pastry tubes very easy and you don't have to change out the bags. I highly recommend this coupler, it's amazing!

    Posted on

    This is a must have in my kitchen. Works great for changing out tubes. Highly recommend!

    LOVE This product.. works great using the 12" or 21" disposable Pastry Bags ...works well with all the tips from here as well.. HIGHLY recommend this product

    Posted on

    This large ateco coulpler is great for frosting cupcakes. Just make sure you have the proper sized tip for the coupler. The coupler does it's job great. I will definitely order more if needed.

    Posted on

    This Ateco 2 piece large plastic couple is one of the favorites. I love using the larger tips for decorating cupcakes and now I can change the tips without emptying my icing bags or using multiple bags. Must have.

    Posted on

    I really love these very heavy duty couplers. It makes my work so much easier by allowing me to use one bag and switch the tips as needed. I highly recommend getting a couple of these.

    Posted on

    It accommodates 9/16", 5/8", and 11/16" pastry tubes and is Webstaurant’s recommended coupler to use with the Ateco 18” clear disposable pastry bags. I use this coupler with the Ateco #9 plain 11/16” pastry tube. I’m a home baker, so I like using larger tips because I can frost more in less time and get a professional look with minimal effort on my part.

    from j4jcline Posted on

    This coupler is super easy to use! Makes changing piping tips a breeze. Good quality, a very solid product. I would definitely buy it again.

    Posted on

    Makes it really quick and easy to change tips.

    This Ateco 404 large plastic coupler is great for those really big piping tips. It is easy to use and a breeze to clean. I would recommend.

    Posted on

    Makes piping super easy, fun, and creates almost no waste of product. This allows you Tom easily switch between different tips without having the hassle of having to move everything into a new piping bag just to change the tip you are using

    Posted on

    if you use ateco pastry tubes (piping tips) and ateco bags, these couplers are always the perfect fit. they're the best for when you do a lot of piping and need to change tips quickly and easily.

    Posted on

    This Adco large plastic Cupler has made my life so much better the best ever spend now instead of sitting here switching pastry bags and all this stuff is a have to do is unscrew the coupler and put a new Tippin fantastic product fantastic price

    from N/A Posted on

    Item works great makes my job easier well worth the price,it does gets stuck while tightening on icing bag like some other brand great couplet

    from Leras Cakes & Catering Posted on

    What a great convenience this product is very glad I got it it's great for when I need to do different styles of tips with the same product very nice I like it

    from Place to be Bistro Posted on

    Love these very heavy duty couplers to hold my tips. I do use them with my disposable bags with ease. The price is unbeatable. It's a win-win.

    from Antoinette Bakery Posted on

    This 2 piece coupler works perfectly with the large Ateco plastic pastry bag. The larger piece goes inside the bag, then the metal tip is placed on the outside of the bag, and the collar screws on over the metal tip to keep the tip in place.

    Posted on

    This was a larger tool that I needed and webstaurant delivered. It is of great quality and is my go to tip holder now. I use it for larger piping and it is great.

    from Beyond Horizons Posted on

    Great larger plastic coupler for larger decorating tips! Its really sturdy and heavy duty! Price is great. We recommend this product to any pastry chef!

    from Tom Posted on

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