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Regularly: $0.29/Each
  • 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

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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.

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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.

Ateco 400 Specs
Color White
Material Plastic
Shape Round
Tip Size Standard
Type Couplers

Ateco 400 Details

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''

Resources and Downloads for
Ateco 400

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 237 reviews


    People Talk About:

    tips couplers coupler great easy standard Ateco bags decorating pastry
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    See All 237 Reviews
    these are great for standard size tips. i do recommend purchasing more than you think you need due to misplaced parts after washing. they save me money so i do not need to use multiple piping bags for one color buttercream.
    Very good quality standard plastic coupler . Works really good with the tips that are the stander size. I like this item and used it already.
    Love this product! I have been cake decorating for years and struggle paying the prices at the store. These work just as well as Wilton for much cheaper.
    This coupler is essential for any cake decorations that require standard size piping tips. The price is super affordable so stock up on enough of these couplers to do a lot of colors of frosting at once and make your cakes and cookies stand out.
    I love these couplers. I prefer them over the brands that I can buy locally at my cake supply or craft store, because they do not have the notch in them. They are round and could even be used to pipe on cupcakes (although the opening is smaller than a large round cupcake tip), but I use them for a wall around the cake when filling my layers.
    Good product. Definitely a must-have. Easy to keep clean too. I recommend having a few of these handy so that you can work with multiple frosting bags at the same time.
    The thickness of these couplers make them ideal for any bag type. They never cut into my bags...even plastic bags that I have reused several times. The price is the best I have seen for them and I always make sure I have a huge mason jar fully stocked with them. You never realize how important these are until you don't have one! Will continue to buy.
    I've used these couplers for many years and I am always pleased with the simplistic and easy cleanup. They make it much easier to juggle different icing techniques in a rush and are easy to clean as well.
    The Ateco 400 2 Piece standard plastic coupler is a perfect little coupler for a beginner or even a novice cake decorator! Can’t go wrong with it’
    they were Great couplers .. what any cake decorator needs to do what they love ..worked perfect and great price compared to stores..good durability I loved them
    This coupler fits snugly without being overly tight. It’s easy to quickly exchange tips without making a mess. The entire Ateco brand of decorating pieces is a great value.
    You can never have too many couplers. For the quality and the price of this product, it can not be beat. I will always purchase this product.
    This is your standard trusty coupler at a great price since you can never have enough of these guys. Easy to clean and will last forever.
    This is a good quality coupler. It is heavy plastic and screws on tight. Easily washable in the sink or the sanitizer. We would purchase more if needed.
    Like that Webstaurant sells these individually--I'm used to purchasing these in sets of 4, which means I leave one or two unused. Does what it's supposed to. Works well. Quite durable
    I Love these Ateco standard couplers! The quality is much better than the other brands I have used, They are more heavy duty. These screw on good around the icing tip and I have never had any issue with leaks, etc...If you do any cookie decorating with tips you need to buy a lot of these, that way you can have one in each pastry bag when working with a lot of colors, and can switch tips easily! These are a necessity!!
    This is a must-have when you are decorating cakes and cupcakes. This is perfect for the smaller decorating tips and makes changing them out so easy!
    This is a product that makes a decorators job so much easier and quicker. It makes switching frosting tips a less daunting task than it would be.
    I love these couplers!! They are so easy to use and have not had it fail on me once even when I am putting a lot of pressure on it.
    This coupler is perfect for small piping tips, making it easy to change out tips with the same frosting without having to use a whole new bag.

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