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Regularly: $0.99/Set

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
  • 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

UPC Code:




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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)

    4.9 stars from 87 reviews


    People Talk About:

    tips coupler great pastry tip Ateco couplers Medium bags sizes
    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

    I really like this plastic coupler. It's very strong and holds the tip very firmly in. Does not pop off like some of the different brand couplers do. Definitely recomend.

    Posted on

    Very nice coupler

    These couplers are a good quality. They are sturdy and thick plastic and seem to hold up long term well . Im pleased with them and will buy again!

    from Everything Iced Cupcakes & More Posted on

    The Ateco 402 3-Piece Medium Plastic Coupler (August Thomsen) is one of the greasiest items I have ever purchased. I had not a clue these even available. You can change the tubes without changing the bag. The price makes this a great value. Highly recommend!

    Posted on

    This coupler is excellent. So much easier to change the tubes. Highly recommend!

    It accommodates medium pastry tubes and can be used with the Ateco 12” or 18” clear disposable pastry bags. I’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

    If you don't already have couplers for your cake piping tips, you should get some. They make changing tips so easy. They are great for when you are decorating a cake and change tips frequently.

    Posted on

    This Ateco 3 piece medium plastic couple is a must have time saver. I allows you to change your tip without emptying your icing bag. You just unscrew the collar, change the tip and screw the collar back one! This 3pcs set let you use two different size tips.

    Posted on

    This product is absolutely helpful, easy to assemble and very reasonable price. I have the small and medium sizes and that cover the need in decorating cake and cupcake.

    Posted on

    This coupler is going to make your life so much easier. It allows you to quickly change the tips and finish your decoration so much faster. Also, it helps saving money as you will not have to have multiple bags with different tips..

    from Posted on

    These connectors are wonderful to work and make changing pastry tips a snap. Being large it holds the bigger tip firmly. Both pieces are Dishwasher safe and clean easy

    from Fragrances on the run Posted on

    This Ateco 402 coupler is great to have on hand for bigger piping tips. I like that it comes with 2 different sized screw on caps for different sized piping tips.

    Posted on

    i bought all 3 sizes of ateco couplers but i use this one most often because most of their piping tubes fit this one. the other sizes are more for specialty tips. but i use all ateco piping pieces so it works great.

    Posted on

    This Atco Cupler for pastry tips is amazing instead of having to keep your pastry tips one bag per tip you just use this and then you switch out your tips as you need them fantastic amazing product

    from N/A Posted on

    Love these very heavy duty couplers to hold my tips. These coupler work for those tips that are larger but not the extremely large tips. I do use them with my disposable bags with ease & security. The price is unbeatable. It's a win-win.

    from Antoinette Bakery Posted on

    Medium plastic coupler are great for any medium sized decorating tips. These are very very sturdy and works as you would expect. Price is great too

    from Tom Posted on

    Inexpensive and they work great. Gone are the days of smelly cloth pastry bags. buy several and have plenty around. Takes seconds to set up in a large ziplock.

    from HomeGrown Eats Posted on

    Medium coupler is a decorators dream. This item allows you to quickly change between tips and get on with the job. Save time and money by not wasting pastry bags by having these on hand

    from Sweet Pea's Cupcakery Cafe Posted on

    Easily switch tips

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