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Regularly: $0.99/Set

Other Available Sizes:

Overall User Rating from 61 reviews

  • Eliminates the need to empty your decorating bag before changing tips
  • Made of durable, white plastic
  • Securely fastens pastry tip (sold separately) in place
  • The two rings accommodate 3/16", 1/4", 5/16", 3/8", 7/16", and 1/2" pastry tubes
  • Ideal for bakeries and cafes
  • Ridged sides along ring for easy assembly

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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 Medium
Type Coupler Kits


This Ateco 402 3-piece, white, medium coupler kit allows the cake decorator to change similar sized tubes without emptying the contents of the decorating bag. This convenient plastic set will be an ideal addition to any kitchen! The 7/8" coupler ring accommodates 3/16", 1/4", and 5/16" pastry tubes, as well as Ateco's 231 large bismark tube. In addition, the 1" coupler ring accommodates 3/8", 7/16", and 1/2" pastry tubes. Plus, 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 3-piece medium coupler kit 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!

Kit Includes:
- (1) 7/8" Coupler Ring
- (1) 1" Coupler Ring
- (1) Base

Overall Dimensions:
Top Diameter: 3/4"
Bottom Diameter: 1 1/4''
Height: 2 1/8''

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.

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Customer Reviews

  • Overall User Rating:

    Ateco 402 3-Piece Medium Plastic Coupler (August Thomsen)

    4.8 stars from 61 reviews


    People Talk About:

    coupler tips Great set tip ateco medium bag pastry couplers
    1 out of 1 found this review helpful

    I love these. Use them all the time with cake decorating and so much easier to remove the tips and change the tip instead of using a new pastry bag. It is the tools like these that make a pastry chefs time easier, less hassles and the tools one needs.

    Posted on

    1 out of 1 found this review helpful

    We love these couplers!! August Thomsen certainly makes very sturdy and well-built and designed items. You can't go wrong with these to use on a daily basis.

    from Heavenly Hershey's Ice Cream Posted on

    1 out of 1 found this review helpful

    Anyone who does a lot of pastry work knows the sizes and varieties of tips is infinite. Having the right sized coupler is an absolute if you want to achieve the proper fit and seal to produce the desired results. Nobody beats Ateco's products or Webstuarant's prices!

    from Gert's Goodies Posted on

    1 out of 1 found this review helpful

    Ateco 402 3-Piece Medium Coupler Set (August Thomsen) 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

    Yes! Another great product from Ateco! I have several of the smaller couplers and use them all the time. I decided to give this a try because I use the Wilton 1M tip quite often. This was a perfect fit for that tip and a few others in that same size. As usual, you can't beat Webstaurant's prices either!

    from Baked Bliss by Laura Posted on

    This is great, whether you're using one tip or swapping. It keeps the tip securely in place - no popping through a stretched or torn piping bag. I changed tips multiple times with very little effort. Very worth the minimal investment.

    Posted on

    Great size! Ateco 402 3-Piece Medium Plastic Coupler (August Thomsen) Are great couplers! Who wouldn't want to get one of these products! You will enjoy it!

    from Tightline Connection Posted on

    These fits perfectly with my tips. They're easy to use without rocket science!! I like simple and hassle free products and this one is just that, hassle-free!!!

    from Tina's recipes Posted on

    This is a excellent adaptor but i can't seem to get the end to screw over my cancas bag. I do not want disposable bags or the plastic lined fabric ones either so i guess all this will just be in my storage room.

    from Todd's Kitchen of Comfort Food Posted on


    Posted on

    This set of couplers is great! Very sturdy and durable. Our bakery staff appreciate the good quality and ease of use. Would highly recommend this set!

    from Oak Hill Bulk Foods, Inc. Posted on

    This medium coupler works nicely. Holds our tip firmly in place and lets us change them out as needed. Great price for the Ateco 402-3.

    from Russ' Sub Shack Posted on

    Good coupler for higher volume applications, an absolute necessity if piping is a significant part of your business. We have plenty of these sitting around.

    from Mike's Mindful Plate Posted on

    These couplers work great for the most part! I have found when mixing it with Wilton products, they sometime leak. So try to keep the Ateco sets together.

    from Sweet Treats Bakery Posted on

    This coupler set is a must if you want to use your pastry bag with different tips without getting your hands dirty. You can use the medium and small tips with this couplers. I also have the large coupler of Ateco to use with the larger tips, and I'm very happy with them. Recommended!

    Posted on

    Ateco 402 3-Piece Medium Coupler Set (August Thomsen) fits the larger tips perfectly. You can never have enough of these around. They price allows that!

    from Ruffled Feathers Posted on

    I bought this item on a whim because I normally don't bother with a coupler when using the larger tips. It is as expected, a good quality coupler by Ateco.

    Posted on

    This coupler is offered at a great price and gives you flexability and convenience while decorating. Be sure you are ordering the right size coupler as these items are not one size fits all pastry tips!

    Posted on

    This medium coupler works well for some of my larger tips and bags. It is designed well and cleans up easily. A standard for any baker.

    Posted on

    Great coupler and the price cannot be beat. Even though they are plastic they hold up pretty well. It is good to have a ton around while you are decorating with multiple colors.

    Posted on

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