The set of toilet hinge featuring pretty easy to fit when you need to replace your old ones, if fit for most toilet seat. The set of toilet hinge included two threaded rods, two nuts, four gaskets. The threaded rod is screwed into the hinge mount, you can loosen the screw at bottom allows the mount to rotate, changing the relative position of two holes, and then fit the gaskets into the threaded rod, at lasttightened underneath with a plasctic wing nut.