The Wilton 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.T his package contains three colour couplers and one cap to connect them. Hand wash only.