Quantity Discounts
Lot pricing allows you to buy an item in a set bulk quantity to save money. We list the amount of product you need to purchase in order to receive lot pricing under the orange ribbon, so you always know how to get the best deal. The same discount is applied for each lot you purchase.


Ships free with Plus
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
When will I receive my item?

Ateco 404 Specs
Color White
Material Plastic
Shape Round
Tip Size Large
Type Couplers

Ateco 404 Details

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''

Resources and Downloads for
Ateco 404

Pastry Tube Chart Pastry Tube Chart

A PDF viewer is required to view this product's information. Download Adobe Acrobat software

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 147 reviews


    People Talk About:

    tips large coupler ateco great pastry couplers easy piping larger

    These are the couplers you need for the russian decorating tips and they are not found in cake supply stores. I was glad to find them here and they work perfectly for what I needed!

    from Blue Door Bakery Posted on

    They are much larger than what Wilton would consider to be "large". I would recommend purchasing tips from here rather than a craft store. They are the same price. These couplers are also more affordable than purchasing from a craft store.

    from Taysty Treats Posted on

    These are great for using with 11/16 size piping tips. especially if you need to change tip in the middle of piping, you can just remove the screw part of the coupler and put in the tips you want.

    from Suga Mama Cakes Posted on

    Large tips seems to be less common compared to the other tips, that’s why I was glad to find this large coupler. It’s not common to see other places, but I’m happy that it’s available at Webstaurant.

    from Fast Casual Cafe Posted on

    Easy to switch large tips

    These Ateco couplers are wonderful for piping tips. It makes it easy to change out the tips (large and extra large) without having to change out the whole bag.

    Posted on

    Atecos large plastic coupler makes it so easy to switch between large tubes and tips without changes the icing. once screwed on, it holds the tips securely no matter how much pressure you apply.

    from RoeMarie Cakes Posted on

    large coupler

    These large plastic couplers are great! They fit perfectly with the extra large Ateco tips, and make switching tips a breeze. They are easy to clean and nice and sturdy.

    from OKC Sweets Posted on

    Cupcake swirl using an extra large Ateco tip with this leg plastic coupler.

    These couplers are perfect for large/extra large piping tips, making it easy to change out tips with the same frosting without having to use a whole new bag.

    from Fika, LLC Posted on

    Great coupler for those large and extra large piping tips. Easy to thread and clean. Ateco products are superior quality and this item is no exception.

    from Sugar Lane Bakery Posted on

    These couplers make it really easy to change out my large pastry tips while decorating cupcakes. I find them especially useful when making large batches where I am changing colors/tips frequently.

    Posted on

    These are extremely durable, made of nice thick plastic and are dishwasher safe. I use these for all of my large frosting tips that I use to decorate cupcakes or pipe whipped cream. I would absolutely recommend them.

    Posted on

    Ateco makes great products and these large plastic couplers are no exception. They are easy to insert in piping bags and they thread great. These couplers are perfect for my larger piping tips that I use for cupcakes, cakes, cookies.

    from Sugar Buff Posted on

    This coupler is exactly what I expected it to be. It is large enough for big jobs while still being able to fit some of my smaller pastry tips. I would recommend it.

    Posted on

    This large coupler is great! It fits my extra large Russian piping tips.

    I am the happy customer! So glad I bought this coupler, it makes my icing easy to do. Less messy and prevent icing comes out from pastry tube.

    Posted on

    Ateco 404 2-Piece Large Plastic Coupler (August Thomsen)

    Working with these couplers makes it easy to change out large tips, and also does a great job of securing the tip into the pastry bag. Great quality and price.

    Posted on

    piping blue frosting

    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

Get paid to review this product!

If you've used this product, simply log in and share your text, video, and photo reviews of it. The customers on the left did it, and you can too! Earn up to $16.00 per product.

Login or Register