For mounting Bath Royale toilet seats on toilets with flat sides or concealed trapway.
Holds toilet seat firmly in place.
NOTE: Most toilet seats have "bottom mount" hardware included. "Top mount" hardware is required when a toilet bowl has "skirt", flat sides or concealed trapway (see photo examples). These toilets have no access under the bowl rim to secure or tighten hardware nuts.
Bath Royale "top mount" hardware requires other parts (i.e. mounting bases, caps, etc.) already included with your toilet seat.