This 1 inch regular black plate is cast from only the best ASTM Grade 20 iron. These plates are ground completely around the edge of every plate leaving no rough edges and leaving it safe for the user and floor. These black plates are coated with a durable resin based paint and baked for one hour to assure a finish that is chip abrasion and corrosion resistant. Includes one 20-pound plate. Additional plates shown are sold separately.