3.5 inch clean/dirty Trump Biden dishwasher magnet. These work on dishwashers made of all types of material; magnetic or otherwise. Dishwasher not made of a magnetic material? Our magnets come with an additional piece that can be added to your dishwasher with a two sided sticky tape (included) allowing your magnet to stick to even plastic dishwasher fronts, but still allowing it to be flipped around from clean to dirty. These are printed on high quality vinyl, applied to a lightweight but sturdy 1/8" white acrylic base. Questions welcome! Lots of other designs/styles available.