EP87 Why different ? It's Polymerized Chemical Toner Not Just Chemical Toner		To be used for : Canon : CLBP 2410, EP-87, Canon : Imageclass MF8170C, MF8180C Replacement toner for : 7433A005AA,7432A005AA,7431A005AA, 7430A005AA Replacement drum for : 7429A005AA Polymerized Toner: New generation toner, chemically polymerized, toner grain is very fine and uniform in size which makes big difference in color quality. Pulverized Toner: Conventional toner, mechanically pulverized.