Wilton large size piping bag couplers fit in most piping bags, and create a sturdy connection between piping bag and piping tip for better control and no leaks!

They also enable you to switch between large sized piping tips by simply twisting off the ring, which means you don't need to empty and refill your bag, or have multiple bags on the go that need cleaning up!

Made from plastic, easy clean up in warm water.