There seems to be some confusion out there about couplers. We get phone calls asking...What is this hollow screw thingy for? How do I attach it? Why do I need it? Here is a quick run down on frosting tip couplers.
We were all beginners once. Sometimes you don't even know where to start. If you've never decorated with a pastry bag before then you may not know how to fit your tips and tubes correctly. Measure twice, cut once.