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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 132 reviews


    People Talk About:

    tips large coupler great Ateco pastry bags couplers easy Plastic

    A bit larger than I expected. Does not fit my one inch piping tips so be aware of that. However for larger tips this works great! Well made too.

    from April Posted on

    Here is the coupler in action. (Piping tip not included)

    This is easy to put on and off. It fit's so well and its very easy to clean too. This is another quality product from Ateco.

    Posted on

    I thought I would use this but because the size is so large it takes up too much of the bag to just apply it. I just work without it.

    from Coco & Mini's LLC Posted on

    We purchased this coupler to work with the ateco tips they worked great for our large cupcake orders. We have even used the coupler for multi colored icings at the same time swirling effect

    from BKE Posted on

    I love this Coupler! I use it with my Ateco 788 12 Piece Plastic Pasty Tube set. The large tips fits this coupler perfectly. It also fits Russian Tips perfectly!

    from WhiskedbyMukta Posted on

    With Ateco 788 pastry tube set

    Russian Tip

    This is a great coupler. It's very easy to use and with good quality. I love Ateco products. Will definitely buy more. The price is best that I can find online

    Posted on

    Great coupler, a must have with the large pastry tubes that I use constantly for decorating cupcakes. Sturdy and washes up easily too, everyone that uses large tubes should have a few of these.

    from Krumm's Baking Co Posted on

    At this price you can afford to buy extras because you can never have too many couplers! I use this with the "Ateco 786 12-Piece Stainless Steel Large Pastry Tube Decorating Set (August Thomsen)".

    Posted on

    These couplers works very well and looks like they will last for a long time as they seem be very durable, I also ordered the large Ateco pastry decorating set for using with them.

    Posted on

    Ateco did it again! The large 404 coupler allows me to interchange the Russian tips. It's amazing and very convenient. I really love this product!

    from Anbriel Biocakes Posted on

    Russian tips and Ateco 404 coupler!!! Excellent match

    Ateco 404 coupler... very nice coupler!

    Makes swapping out those large tips much easier. Ateco quality as usual is more than expected at a good price. These large couplers go well with the Ateco 786, the 12 piece Large Tip Set.

    Posted on

    This is large and awkward to use at times. But as it fits the larger tips I have to use in my bakery, it does what it is supposed to.

    from Treva's Pastries and Fine Foods Posted on

    Great for making cookies! I use it with the Ateco 4721 clear disposable pastry bags. Convenient to clean after use. I clean with warm water and soap.

    Posted on

    Great tool, allows you to quick change the large style tips like you can find in set Ateco 786. Handy to avoid mess or multiple bags if you want to do multiple patterns out of a given color etc.

    Posted on

    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

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