i bought a jem nozzle a number #12 and the diametre is 7mm it looks quite small does anyone know if the wilton one is the same or bigger?
Hopefully, someone here will know the question to your answer and will help you soon. I have a Wilton 12 tip but I am not sure what size it measures up to. I know sometimes I have just used the coupler with no tip and used that as a round tip before and it works pretty good for some things. What exactly are you using that tip for?