The Colour Swirl 3-Colour Coupler seamlessly blends 2-3 colour icings as you pipe. Choose from double swirl or triple swirl colours. The interlocking coupler pieces connect multiple decorating bags, allowing you to swirl 2 or 3 colours together with one simple piping motion. Just connect and secure with the included ring. Colour Swirl? 3-colour coupler interlocks three decorating bags (sold separately) into place so you can easily decorate cakes, cupcakes and other sweet treats in multiple colours. You can also switch out tips easily for different piping techniques in the same icing colours. Colour Swirl three-colour coupler includes three interlocking coupler pieces that are placed in decorating bags. The ring holds the decorating tip secure while piping. Recommended to use with Wilton 16 in. Decorating Bags and Decorating Tips 1M, 1A, 2C and 4B (sold separately).