Turn your bathroom sink into a fountain. Easy mouth rinse. Pull on the sides to activate the fountain no need to plug a hole. For those of you who love sticking their fingers in holes, a simple version has been provided. An oring was designed to fit originally in the bottom, but it worked just as well without. Simply press mid and outer together, they lock in place. Happy Mouth Rinsing! Note: Fits a 24mm to 25mm faucet head. Some sanding or tweaking maybe needed depending on the printing.