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Regularly: $0.29/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
  • Ideal for bakeries and cafes
  • Ridged sides along ring for easy assembly
  • Perfect for commonly sized pastry tubes

UPC Code:




Usually Ships in 1 Business Day
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You May Also Need

"You May Also Need" items are guaranteed to work with the item you are viewing, such as lids that will fit a cup or casters that will fit a piece of equipment. If an item is not listed in this section, we do not guarantee that it will work with the product you are viewing and do not recommend that you purchase them for use together.

How to Pipe a Rose with Buttercream Frosting

How to Pipe a Rose with Buttercream Frosting

Use these simple steps to professionally add a buttercream rose. You'll need a spatula, rose tips, a leaf tip, couplers, a flower nail, a rubber spatula, and piping bags. Begin by squeezing cream onto the flower nail in a circular motion, creating a lump with a tip on it. To create the layers of a rose, squeeze cream in an short arch motion and continue rotating the rose until you have the desired amount of layers, or petals.

Copy and paste the embed code above.

Ever wonder how to professionally decorate your cake? Watch this short video and learn how to style up your next cake with a classic buttercream rose.

Color White
Material Plastic
Shape Round
Size Standard
Type Couplers


This Ateco 400 white, standard coupler allows you to interchange standard sized tubes and small tubes without emptying the contents of your decorating bag to save time and labor. 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: 1/2"
Bottom Diameter: 1''
Height: 1 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 400 2-Piece Standard Plastic Coupler (August Thomsen)

    4.9 stars from 210 reviews


    People Talk About:

    tips great couplers easy coupler ateco pastry different price bags

    I love these couplers. They work perfectly and fit all standard tips. They are priced well and ships quickly. Will order this product again! Thanks

    Posted on

    These couplers work great, and allow you to change out small tips easily at will. Even if not changing tips I do use these couplers sometimes because it does help secure in the tip.

    Posted on

    I used these with the ateco 12" pastry bags and the ateco decorating set. These worked great and as expected. And were easy to clean.

    Posted on

    These couplers work just as well as most couplers. Quality is average, nothing exceptional but nothing bad to report. They do the job they're designed to do.

    from Sweets by Nonnie Posted on

    This standard sized coupler makes piping frosting a lot easier. It helps hold a small to average piping to the bag without it sliding out and without me holding it.

    from Bonadea Soaps Posted on

    Couplers are critical for cake decorating but the large size is pricy - but not these! A really great value for an important tool in the cake decorator's toolbox.

    from Monsoon Sweets Posted on

    Really like this a Atteco 2 piece standard plastic coupler works very well good quality great value easy to clean perfectly fits for smaller pastry bags

    from Kathy J Posted on

    Perfect Coupler! used with my existing piping bags and tips, and worked like a charm! held tips in place with ease and very easy to use. will never use a piping tip without this coupler again!

    Posted on

    This is a standard coupler that will help you with decorating and piping projects. It is simple but essential. Secures the tip to the bag in an easy way. We are able to order multiple and stay well equipped.

    from Sprinkle Idea LLC Posted on

    Does the job perfectly! Fits nice and securely to a smaller pastry bag. I had no leakage at all from the icing. This will definitely hold up well.

    Posted on

    These couplers work well. They work with a variety of tips, not just Ateco tips. I have used them with my Wilton tips and my PME Supatubes.

    Posted on

    Great coupler that fits a lot of different sizes of piping tips. Very versatile and definitely a must buy for the price. So easy to use and great to interchange tips with!!

    Posted on

    I love these couplers! I bought about 12, wish I had bought more. These cupcakes make it super easy to do Unicorn cupcakes and cakes since I have to use 5 different colors of frosting.

    from whiskedbymukta Posted on

    I got these thinking I was going to use them but they are really large and just go without. Didn't imagine they would be that big.

    from Coco & Mini's LLC Posted on

    Be sure to add a few of these to your next order as they are great quality... You can't go wrong! I use them all the time, they are sturdy and wash up beautifully.

    from Krumm's Baking Co Posted on

    The Ateco Standard plastic couplers are very sturdy compared to other brands that I have previously used. They fit perfectly well with the Ateco 783 - 55 piece pastry set.

    Posted on

    Great quality couplers! I like that the part that goes inside the decorating bag is longer (in case you cut too big of a hole).

    from Cakes by Julia Posted on

    Very sturdy and reliable!

    Couplers are handy to have around and these are quality for a good price. These Ateco 400 are the standard size fitting most Ateco, Wilton, etc tips of normal size.

    Posted on

    Great couplers. I like have a lot of extra couplers hanging around. These are great and at a fantastic price. A must buy for every baker.

    from Sweet Gourmet Cafe Posted on

    This coupler which comes in two pieces is very high quality and ensures that the no water will escape. I used it to repair my sink and have had no problems since.

    Posted on

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