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Regularly: $0.99/Each

Other Available Sizes:

  • Accommodates 9/16", 5/8", and 11/16" pastry tubes.
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51 reviews
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This Ateco (August Thomsen) 404 large plastic coupler allows the cake decorator to interchange standard tubes and other small tubes. With this coupler, the decorator will not have to empty the contents of the decorating bag. It accommodates 9/16", 5/8", and 11/16" pastry tubes.

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 404 Large Coupler (August Thomsen) ( 4.9 stars from 51 reviews )

    I would make sure that you have tips that fit this size. The large ateco is very large and would not fit your average tip size. This is great for filling and evenly putting on icing on large cake. Durable and great for larger job.

    from The Travels Inc Posted on

    This is great for large bags and large tips when doing bulk orders or large sheet cakes. Durable and not available at local stores in this size

    Posted on

    I use couplers all the time and these are great for larger tips. This fits perfectly with the Ateco #9 tips. It adds stability to your tips, especially when using a disposable bag, and makes changing out tips such a breeze.

    Posted on

    These are super big and sturdy and work great with the 808 and 809 decorating tips. We love that we purchased them for our bakery.

    from The Talented Cookie Company LLC Posted on

    good quality, large size coupler. i will probably not use it very often but it will come in handy for when you need to pipe a lot of icing in a hurry

    Posted on

    Perfect larger size to use in my big pastry bag! Not an easy size to find in store so i'm happy I was able to order it here.

    from Confections by Kristin Posted on

    This Ateco Large size Coupler is truly LARGE. If you're not sure if you will need size Large, make sure to order a Size Medium Ateco Coupler set as well.

    Posted on

    The large couplers are great for both the Ateco disposable bags and the nondisposable bags. They work nicely on large cakes specifically wedding cakes that need a great deal of piping. They are also quite easy to clean which is good in this business.

    Posted on

    A large coupler for a large job. I love the Ateco tips and this makes switching decorations a breeze. Simply insert the coupler in the bag, add your buttercream and attach your decorating tip. When you want a new design, switch to a new tip. Simple.

    Posted on

    These large couplers are a miracle, I have been using piping tips for so long with just a bag and this has made it a breeze to replace tips.

    Posted on

    These large couplers worked great with the Ateco large tube decorating set. Great price and easy to use. I Would red come d to others.

    Posted on

    Love the large couple and large tips. Getting older and not wanting to take all the time I did when I was younger. My daughter is partial to the smaller, good thing, she needs the basics. Great coupler, fits nice a tight. Love Ateco!

    Posted on

    Wouldn't be without my Ateco 404 Large Coupler. Makes changing large tips a snap. I enjoy the extra stability I get when using a coupler with my decorating tips.

    Posted on

    highly recommended for the peop;e who use large tips... saves time in cake decorating.. ateco large couplers are good in quality and they are very easy to clean.. i will recommand these to all my friends

    Posted on

    Great coupler and always handy when I'm using a lot of different tips and don't want to switch out my piping bags. I would highly suggest stocking up!

    Posted on

    These are a great time saver for anyone that has to change tips on the same bag repeatedly. Clean up on these are a breeze, just put them through a dishwasher.

    Posted on

    Great for bakers who need to change their piping tips often. They are made from quality plastic and haven't shown any wear in the months that we have had them. Would definitely purchase/recommend them to anyone.

    from One Dish Cuisine Posted on

    I absolutely love these couplers. It makes using a wide variety of tips to decorate a cake effortless and is a time saver. It also prevents you from having to use a million pastry bags.

    Posted on

    We overlooked these before, but if you've never used one, you need to. It may seem like extra hassle to attach the coupler to your piping bag, but once it's done, you can switch piping tips easily.

    from Baked and Sconed, LLC Posted on

    These things are great. I love how well they work. Easy to screw on, off, and just a quick change for a new tip. Just be sure you get the right size for the tips and bags you're using. This one is quite large. Be sure you have all the same sizes for tips., as the difference between a large and a medium is substantial, and it just won't fit. These are easy to clean, as well, and I just toss them into the silverware rack on my dishwasher, and they come out clean as can be, easy peasy.

    Posted on

    This is a very large coupler for use with other Ateco large tips. Not for use with Wilton tips that you buy from the store as they will be way too small

    Posted on

    This is the most reasonable deal I have found on large couplers! and the quality is insane! :) the large tips are awesome for cupcakes.. I will be ordering more soon!

    from Heart of Cupcakes Posted on

    Ordered this to accompany my Ateco 809 11/16" Plain #9 Pastry Tube. I don't know what I was expecting, but I did not know it would be this huge. Perfect fit for my new pastry tube. I would probably suggest using at least a 18" bag, however.

    Posted on

    Ateco 404 Large Coupler. This coupler is necessary to easily change out the largest pastry bag tips in the catalog. I trim my pastry bags to fit and leave this installed.

    Posted on

    Ateco 404 Large Coupler (August Thomsen) fits 16 inch bags perfect. they hold a lot of pressure when you squeeze the bags. Very happy with the price and quality of these.

    Posted on

    Great coupler that does the job well. These are very large, so make sure you really need the large ones before ordering. These are too big for normal decorating tips. They are very strong and work great.

    from Me Too! Posted on

    The large coupler is the largest size you can use. If you are looking for the coupler that fits the large tip that you can purchase from your craft store, ie 1M tip, this one WILL NOT fit. Great quality though too large for my current tips.

    from A Cupcakery Inc Posted on

    It is a big help when doing large cakes or a lot of decorating. I use these with the larger bags and the big decorating tips. Saves a lot of time and the pain in my hands.

    from WINDY CORNER Posted on

    Ateco to me is better than wilton product and you can get from webstauant ! More selection and cheaper prices. I paired this with a larger tip... Made icing cupcakes a breeze!

    Posted on

    Great for customers that love lots of icing!

    I was shocked to say the least when this coupler came in. The quality is wow, The size is wow, now I can use my bigger tips cover them and switch them as needed. Great buy!

    from Anna Mea's Bakery Posted on

    The Large Coupler I bought is great for my large decorating bags and large decorating tips. Performs well and no leakage of icing from the coupler.

    from Desiree's Desserts Posted on

    This large coupler worked great for the # 9 pastry tube that I purchased from this site, it worked great with the pasrty bag that I used, and fits others that I have purchased in the past.

    from Jazzy Ruperts Cafe Posted on

    I use the Ateco large star (# 829 & 849) and large plain (#809) tips for decorating cupcakes, and this coupler makes it very easy to switch between tips.

    Posted on

    I bought these couplers along with the Ateco tips and both are great quality and very sturdy, even for thicker consistency icing. I would buy them again.

    from New Era Services Posted on

    This is a fine coupler, though I don't see how it works with the sizes of tips noted in the description. This coupler is for the really huge tips used for frosting large cakes. I wanted one that worked with the Ateco 809 and 827 tips, and this one is too big. Unless I was mistakenly sent the wrong one?

    Posted on

    This Ateco brand coupler works well with any style pastry bag. It makes it easy to get a perfect seal between the bag and the decorating tip, no leaks.

    Posted on

    Perfectly fits the individual large tips sold on this site. Have used it to hold the #9 large star tip when piping out pate a choux for eclairs. Some people do not use a coupler for the large tips, but I prefer the more secure hold a coupler provides while piping, especially a large batch in a large pastry bag.

    Posted on

    A must-have when changing large decorating tips or pastry tubes. I have used a decorating bag without a coupler and usually end up needing to change a tip which means filling another bag.

    from Susie Qusie Chocolate Fountain Posted on

    Ateco is a great brand and these work perfectly. I purchased 3 over 6 months, use them every day and have they are holding up great!

    from Cupcakes Like It Sweet Posted on

    Ateco 404 Large Coupler very sturdy, good quality plastic coupler. Great fit for Tube Pastry #7(open star and closed star) I've purchased.It closes tight. Very satisfied with that purchase.

    from Tedy's Mix Posted on

    The Ateco 404 Large Coupler is great work's well with the ateco decorating bags. We hjave a large coupler with each 18"bag .You don,t have to refill as often.

    from Harrison Familey Restaurant Posted on

    This I ordered for the use of making cupcakes this. This is a must have for any cake or cupcake decorating. The large opening can be used to make full frosted designs.

    from Plush Events Posted on

    This is what resulted with the large coupler tip with my cupcakes.

    Ateco large coupler works great with the Ateco large tips. Make sure you get the 18" or larger pastry bag when using these tips so you don't have to refill the bag constantly!

    from FH Cakes Posted on

    Every pastry chef needs several of these in his or her tool kit. They are essential in cake decorating. They make it very easy to switch tips quickly and keep the same pastry bag.

    Posted on

    I HIGHLY recommend this product to anyone, professional or in-home, interested in making cakes. This product allows you to flawless make multi-flavored cakes without any run or breakage.

    Posted on

    Love this large Ateco coupler! Makes switching pastry decorating tips very easy! Easy to use, even easier to clean! Very inexpensive and worth every penny!!

    Posted on

    Great coupler for the larger almost extra large sized tips. This sized couplers are hard to find in stores. I have a number of them so I'll have different tips on each bag when decorating. Well made thick plastic.

    from Doughlicious Cakes Posted on

    I was so excited to find a couple that fit my large Ateco party tips and at such a great price to boot! I will be stocking up on these bad boys!

    Posted on

    Great coupler!! The price was wondeful and this large coupler is a good size for the larger pastry tubes i purchased from this site. Fit perfectly!!!

    Posted on

    This is a necessary size coupler to use with certain tips. It's well made and super durable. No compliants whatsoever. We don't find it super useful because most of our tips we just drop in the bags now rather than mess with the coupler, but as far as quality goes, this isn't a cheap plastic!

    from Scratch Posted on

    Works very well. Holds up to our students' use & abuse.

    Posted on

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