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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:




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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 187 reviews


    People Talk About:

    tips great coupler easy couplers ateco pastry Plastic price bags

    Great price. Heavily made and easy to clean, just the right size for 12 inch pipping bags. Easy to use with smaller pipping tips, great product. I love them, a must buy!

    Posted on

    I am in love with this plastic couplers. They are the best! I tried a few others before in the future, and most of them were flimsy and didn't do the job well. Those are perfect. They are very sturdy. Hold the tip very well, and are so easy to clean.

    Posted on

    The perfect coupler.

    These are the standard coupler. Webstaurant has the absolute best prices. I buy these in bulk as I go through so many based of different projects.

    Posted on

    Before the couplers, it was a real pain to switch tips on a frosting bag, but these little guys make it so easy. The threaded plastic is also easy to clean with hot soapy water.

    from FrostAvenue Posted on

    We definitely recommend the Ateco 400 2 piece stand plastic coupler. We used wilton couplers for years, and recently made the switch. These are the real deal.

    Posted on

    Exactly what we were looking for. It's getting difficult to find the couplers without notches and these are such a great price! Have not had any issues with them.

    from Thirsty Whale Bakery Posted on

    A great product at a great price. Makes it so easy and quick to switch out tips on our bags. The coupler is durable and holds up to constant use. We've switched to using these couplers exclusively in our store.

    from The Sweet Batter Posted on

    It accommodates standard pastry tubes and can be used with the Ateco 10ā€ or 12ā€ clear disposable pastry bags. Iā€™m a home baker, so I like using tips because I can frost more in less time and get a professional look with minimal effort on my part.

    from j4jcline Posted on

    These are great couplers for a great price! They twist tigether smoothly and are easy to clean. I will be purchasing more to keep on hand for my cupcake decorating!

    Posted on

    Great value for an item that is often overlooked. The price of these couplers is so good that when they accidentally end up in the trash, you don't have to worry. Long lasting too.

    Posted on

    It's a coupler! These were really cheap so I added some on to my order, it always good to have a few extra around. These are good quality ones, strong, think plastic, as long is I don't lose them they should last a good long time.

    Posted on

    Had to buy a lot. Because I always use about 5 different piping bags to decorate my cake pops so it's great price to have plenty in stock.

    from OH POPS Posted on

    The Ateco 2 piece standard plastic coupler holder fits several different brand of tips. I have used it with the Ateco, Wilton and PME standard size tips.

    Posted on

    This does an excellent job at coupling, and the two pieces makes it work very smoothly. I'd recommend getting multiple just in case you lose them in the wash!

    from Saxon Posted on

    I bought these and the 29 piece set of tips. they worked out great. they were definitely a great price. especially if you buy a dozen. I would highly recommend getting extra couplers if you buy a set of tips.

    Posted on

    I really like this coupler because it's so easy to change the different pastry tubes and allow me complete my cake decoration much faster. I strongly recommend this item

    from Posted on

    I use it a lot for my cupcake and cake, it is good idea to have a bunch of different sizes at the same time. Washing is easy just put it in warm water to loosen up the icing. What a great buy, like always.

    Posted on

    I love these. I bought a whole bunch of them so I don't have to wash them in the middle of a project. These were a great price.

    Posted on

    ateco 400 , perfect match to ateco 3310 plastic pastry bag ,from now on i will purchase only ateco products , they are solid and for heavy duty use

    from Aslan Khan LLC Posted on

    I have at least 6 of these on hand at all times because they fit the majority of my tips - both Wilton and Ateco small tips fit in this coupler. They last a lifetime! You are probably going to lose them before you would ever damage them. They are so well made.

    Posted on

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