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Regularly: $0.29/Each

Other Available Sizes:

  • Eliminates the need to empty your decorating bag before changing tips
  • Made of white plastic
Usually Ships in 1 Business Day
When will I receive my Item?
98 reviews
MFR Item:

Companion Items

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 (August Thomsen) 400 standard plastic coupler allows you to interchange standard sized tubes and small tubes without emptying the contents of your decorating bag. Ideal for bakeries, cake decorators, coffee shops, and anywhere else you need to decorate food items quickly with minimal mess, this white plastic coupler will get the job done!

This coupler is compatible with Ateco's 783 55-piece stainless steel pastry tube decorating set (August Thomsen), as well as small-opening reusable bags and all disposable bags.

Please note: All reusable bags, except canvas bags with seams, can be cut to fit different tips and couplers. These size recommendations are based off measurements prior to cutting.

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.


Pastry Tube Chart Pastry Tube Chart

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Customer Reviews

  • Overall User Rating:

    Ateco 400 Standard Plastic Coupler

    4.9 stars from 98 reviews


    People Talk About:

    tips couplers coupler great Ateco bag easy bags pastry decorating
    See All 98 Reviews

    awesome to have this Ateco 400 Standard Plastic Coupler so that easy to change your compatible tips for this coupler awesome and great add ons

    from ashlexdrei tradings /sweets by chef jhay Posted on

    We use these in our business and love them!! They are manufactured well and hold up to many uses. I would highly recommend any business purchase these for their use.

    from Heavenly Hershey's Ice Cream Posted on

    An absolute necessity for my larger filler tips. Ateco's couplers work equally well with pastry bags of different manufacture, fabric, and even disposable. They are easily assembled and cleaned.

    from Gert's Goodies Posted on

    This small pastry tip coupler is great! Fits my small tips perfectly and insures a tight seal so I never have to worry about leaks or squeeze outs. Very pleased.

    Posted on

    I love this coupler. It's simple to put together and cleans up easily. Switching tips takes just a few seconds. No more wasting or dirtying extra piping bags!

    Posted on

    The Ateco 400 Standard Plastic Coupler fit perfectly with the tip and pastry bag. Great price for an good product. Will buy again if needed.

    from T & C Catering Services Posted on

    These couplers are great! We have dozens of these. They are indispensable when you are doing any amount of decorating. Its makes changing out tips so much easier.

    Posted on

    well designed. very functional. easy cleanup. good grip for working the frosting on anything from full size cake to smaller cupcakes. very pleased with the item and would recommend to others. sturdy design and easy to assemble

    from Chad Fenner Posted on

    perfect size coupler for our small tips! it's easy to change your tips without switching to another bag! we recommend ateco to all of our customers!

    from CakeBox Posted on

    standard size and I can never have to many! I like to decorate using many colors and these keep the tips on the bag. great price for always loosing them. I buy a lot at a time!!!

    Posted on

    Very essential for pastry bags and cake decorating. I have probably 50 of them now. You can never have too many. Good bag and good coupler means no leaks or mess when decorating.

    from Ivy Bakery Posted on

    Great product. We would go through way too many bags if we didn't have these sturdy couplers. I have at least 20 of each size. Made strong.

    Posted on

    My only issue with couplers is they dont all fit together. If you also have couplers made by a different company, they are not interchangeable. Otherwise, they are a great product.

    from Sugar Coated Bakery Posted on

    Another great product by Ateco! I have several couplers made by Wilton. This is the first time I've purchased the Ateco coupler. I'm definitely an Ateco fan and will only buy these going forward. They have a more heavy duty feel to them and are a bit longer, but still a perfect fit for standard piping tips. Great price...bought several.

    from Baked Bliss by Laura Posted on

    These couplers work wonderfully. I had a bunch laying around my bakery that I kept losing pieces to so I decided to buy some more. Great value! Would definitely recommend.

    from Tiffanee & Co. Bakery Posted on

    great couplers, they are compatible with the Wilton tips I have. Easy to wash, the grease comes off easily and easy to put in the piping baf

    from Angel's Bake Shop Posted on

    This Ateco standard coupler is great to have! I love switv=ching tips mid- frosting so a coupler is a MUST- love all the ateco products!

    Posted on

    Best couplers ever. The parts thread together really well, and the tip stays on well and tight!! No leaking icing. Fits on my tipless icing bags perfectly.

    Posted on

    I love using these couplers and since they're so small it's great to have a lot of them... Thankfully Webstaurantstore.com has them for a great price!

    Posted on

    These are really good quality couplers for icing bags. I actually like them better than the Wilton ones, which Is really the only ones available locally. Will continue to order these.

    from Everything Iced Cupcakes & More Posted on

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