The Color Swirl 3-Color Coupler Decorating Kit has everything you need to get started. Use the Color Swirl 3-Color Coupler to seamlessly blend 2-3 color icings as you pipe. Choose from double swirl or triple swirl colors. The interlocking coupler pieces connect multiple decorating bags     allowing you to swirl 2 or 3 colors together with one simple piping motion. Simply connect and secure with the included ring. Use the included 16 in. decorating bags to decorate sweet treats with the easy color swirl technique. Alternate decorating tips to vary piping techniques. Kit comes with tips 1M and 1A     but also works well with tips 2C and 4B (sold separately).