MaxPerfomance, Rubber Toilet Plunger, Fits The Newer Key Hole Oblong Toilet Bowl Outlets, Patented Design, Guaranteed To Create A Seal In Any Toilet In Order For An Effective Plunge. Maxperfomance, rubber toilet plunger, fits the newer key hole oblong toilet bowl outlets, patented design, guaranteed to create a seal in any toilet in order for an effective plunge.