Wendell August Forge Rhythms 4-Piece Coaster Set, Hand-hammered Aluminum, Keeps Tabletops Safe, 4.5 Inch Round Coaster Hand made with pride in the USA Each Wendell august piece is individually hand crafted A perfect addition for an heirloom collection For polishing, use a small drop of furniture polish or wax on a soft cotton cloth and polish in a circular motion to the desired luster If scratched, use 0000 steel wool and polish with the grain of the metal