These adjustable flanges are what allow your TUSHY to attach to your toilet bowl. These come included standard with any TUSHY 4.0. Grab these if you lost or broke your original set. How It Works: These 2 pieces rotate around to find the optimal TUSHY placement on your bowl, then your existing toilet bolts go through the slots in the silicone Schmutz Shield and are tightened for a snug fit. Compatibility: For TUSHY Classic 4.0 Kit includes: 2 rotating flanges