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Regularly: $0.99/Set

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Overall User Rating from 71 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.

Customer Reviews

  • Overall User Rating:

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

    4.8 stars from 71 reviews


    People Talk About:

    tips coupler Great tip pastry ateco Medium couplers bag fit
    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

    Makes icing job easy. I can usually get away without it but prefers to use it. My kids love it than just having the tip on pastry bags by itself.

    Posted on

    This worked well with my Wilton tips and pastry bags. It feels sturdy, well made, and the pieces fit well together. The treads line up perfectly and securely. I am happy with these couplers and will get a lot of use out of them in the future.

    Posted on

    I was a bit disappointed that this one looks to be like the large coupler that Ateco carries. That means (for me) that I reach for it thinking its the large one and the tips wont fit. I'll need to label them.

    Posted on

    These help you attact your paistry bags to your design tips Ateco 402 3-Piece Medium Plastic Coupler (August Thomsen) are dependant on the size of your tips so always get all sizes and for accordingly

    from PowerQuee Media Posted on

    These couplers are AWESOME! I love having these around to put into my bigger bags for my bigger tips when I decorate my cupcakes. I have been looking for these and am so glad that I finally found them! Highly recommend!

    from Small and Simple confections Posted on

    Great coupler, as expected of anything Ateco brand! It's made of thick, sturdy plastic and holds the tip firmly in place. The product description notes the tip sizes that work with this coupler; standard and large couplers are also available on webstaurant at excellent prices to accommodate other tip sizes.

    Posted on

    Perfect size for the tips that I ordered on here made by a no name company. I just wish I had known that those tips needed a medium sized coupler. They work great.

    from A Bite on the Side Posted on

    My set of tips has a few larger ones that don't fit a standard coupler . They though fit this one perfectly. I also have some Russian tip spheres that are too small for the large one used with Russian tips but too large for the standard coupler. They too fit this medium one. I will be buying more. They are sturdy and clean well.

    Posted on

    A Large sized and hard to loose handy item! The grooves have head up to daily use and this coupler does work great with the right tips,

    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

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