Magnetic stopper

In a tub having inner and outer side walls, a spill opening and waste outlet, said waste outlet comprising a waste outlet fitting comprising a tubular body which in use is seemingly mounted in a waste outlet opening, a waste flow passage defined within the tubular body, a seat defined within the tubular body surrounding the flow passage and a circular disc-like plug mounted in the body movable between a closed position in which the periphery of the plug sealingly engages the seat whereupon the plug extends across the flow passage to close the flow passage to fluid flow and an open position in which portions of the periphery of the plug are spaced from the seat to permit fluid flow through the flow passage wherein the plug periphery and seat are of mating part-spherical shape, the improvement comprising configuring said plug of a first magnetic material and providing a second magnetic material proximate said plug, said second magnetic material being rotatable about an axis such that said plug can be rotated about an axis of said plug by rotating said second magnetic material.