●COUPLERS SIZE-These couplers length is 5.5 cm/ 2.16 inches, diameter is 2.3 cm/ 0.9 inch at the top.    It's fit for Big-size piping tips and all the piping bags.

●STURDY PLASTIC-These couplers are made of sturdy plastic-Non-toxic, tasteless, food-safe materials, durable and reusable. You can rest assured to use it.

●EASY TO SCREWN ON OR OFF-The pieces of these couplers screw together easily,use these will help you easy to change piping tips without unnecessarily wasting bags or frosting

●SIMPLE TO USE- Cut a tiny hole in the bag corner, insert this plastic coupler, then attach the tip and screw on the ring, after done, remove the tip and coupler, wash them clean.