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Regularly: $0.29/Each

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
  • Ideal for bakeries and cafes
  • Ridged sides along ring for easy assembly
  • Perfect for commonly sized pastry tubes

UPC Code:




Usually Ships in 1 Business Day
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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.

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 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''

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 170 reviews


    People Talk About:

    tips great coupler couplers pastry plastic easy ateco tip bags

    I love these. I bought a whole bunch of them so I don't have to wash them in the middle of a project. These were a great price.

    Posted on

    ateco 400 , perfect match to ateco 3310 plastic pastry bag ,from now on i will purchase only ateco products , they are solid and for heavy duty use

    from Aslan Khan LLC Posted on

    I have at least 6 of these on hand at all times because they fit the majority of my tips - both Wilton and Ateco small tips fit in this coupler. They last a lifetime! You are probably going to lose them before you would ever damage them. They are so well made.

    Posted on

    These couplers are exactly what we needed for our cookie business they are cheap and plentiful.I have enough for all my workers. It is great for switching different size tips

    from sweetart Posted on

    Perfect for any size bag and any size tip. I used it mostly with my Wilton metal tips and worked perfectly. Changing my tips was quick and easy.

    from Roemarie Posted on

    This Atco Cupler for pastry tips works great you slide this in the bag and you can screw your pastry tips on instead of making a big mess trying to switch out pastry tips you just unscrew it and screw the next one on fantastic

    from N/A Posted on

    Love the Coupler's. They are sturdy and fit in all sizes of my pastry bags. You can even throw them in the dishwasher for easy clean up.

    from Deb's Delicate Pastries Posted on

    This is a really wonderful Rob to P standard plastic cup work is great to switch a picture tips very fast great thing to have for pastry chefs

    from Place to be Bistro Posted on

    Makes piping super easy, fun, and creates almost no waste of product. This allows you Tom easily switch between different tips without having the hassle of having to move everything into a new piping bag just to change the tip you are using.

    Posted on

    this coupler works perfect with ateco pastry bags and tips but be aware that different size tips need different size couplers so check what item number your tips are before you purchase.

    Posted on

    This coupler is strong plastic and easy to clean. Fairly inexpensive to replace. I would recommend the pastry bags and this coupler for any bakery. We use them in our pizzeria for filling cups of cheese sauce.

    from Muncheez Pizzeria Posted on

    This 2 piece coupler works perfectly with the Ateco plastic pastry bags. The larger piece goes inside the bag, then the metal tip is placed on the outside of the bag, and the collar screws on over the metal tip to keep it in place.

    Posted on

    This product was amazing! It came on time and was exactly what I ordered! The material was durable and easy to clean. I will definitely be ordering more.

    from Beyond Horizons Posted on

    Great small plastic coupler. Works great with any small decorating tips. It!s really good quality and price is great as well. We highly recommended this product

    from Tom Posted on

    The 2-piece standard plastic coupler by August Thomsen works just as advertised. We have used the coupler for over a year without incident, hence the positive review.

    from Rise Bakery Posted on

    I have used these couplers before. Great product. Very useful when it comes to needed to decorated in different patterns. It is easy to use.

    Posted on

    I have used Ateco tips and couplers for years and they are a great product. You can't beat the price here. As always super fast shipping too!

    from Kern Valley Farm Posted on

    Nice quality coupler. The threads are nice and deep so getting the ring into places is easy. It cleans up easy and works great. Great price for what you get.

    Posted on

    I bought them hoping they'd work with standard sized Wilton tips. Excellent price, especially when buying in bulk. They fit great so I am very pleased!

    Posted on

    This is what you have to have if using refilled bags yhis ensure you can quickly use diffrent tips.this is a must have for bakers

    from Sweet Candy Finds Posted on

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