This Ateco 400 2-piece standard plastic coupler allows you to interchange small / standard-sized piping tips with absolute ease! Even though all reusable bags can accept small decorating tips without a coupler, this convenient item enables you to swap out piping tips without having to empty the contents of your decorating bag, which saves you time and labor.

That said, to use this coupler properly, simply trim your reusable bag before use! However, since canvas bags with a sewed seam cannot be trimmed, they are not compatible with this item. In addition, ridged edges on the ring allow you to easily assemble the coupler to the base with minimal effort. This coupler works best with standard-sized piping tips that have a 11/16" bottom diameter. Ideal for bakeries, cake decorators, coffee shops, and anywhere else you need to decorate baked goods, this plastic coupler will get the job done!
 
Overall Dimensions:
Top Diameter: 1/2"
Bottom Diameter: 1''
Height: 1 3/16''