1. Material: PVC 2. Quantity: 1pc 3.100% Brand new and high quality 4. Suit for round bottom Russian piping tips nozzle diameter about 1.46 inch,about 3.7cm!!! 5. Functions: The interlocking coupler pieces connect multiple decorating bags, allowing you to swirl 2 or 3 colors together with one simple piping motion. 6. Color: Random Swirl 3-Color Coupler seamlessly blends 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. Easy to use and Clean Many designs are available. Package includes: