Bests & Worsts Reviews from Amazon

The product description claims it "FITS ALL TOILETS including: Kohler", but it does not fit my Kohler. If you are trying to plunge a Kohler with the drain shape shown in the picture, do not get this plunger. No matter what angle I plunged at, the unit would not fully seal against the notch shown at the bottom of the picture (front of the toilet). It came closer to working than most plungers, but close isn't good enough. Fluid just spurted from the uncovered notch. I am still looking for a plunger that will work.