Review on Enhance Your Magnetic Car Mount Experience with 24 Pieces of Replacement Mount Metal Plates - Universal for All Devices (Deep Pink) by Keith Saywon

Everything goes with these plates except the coating. They are cut from sheet steel and only painted on one side. The result is a bare steel edge that is not painted. Because the edges are bare steel, they will oxidize (start to rust) when exposed to moisture, leaving brown stains on anything that touches the rusty metal. Interestingly, the product page images show plates with holes. The ones I received have no holes. Plates with holes are usually painted on all sides, including the edges.