Do it Wiser Compatible Konica Minolta Magicolor 3730 3730DN Toner - A0WG02F TNP20K - Black - High Yield 5,000 Pages Black High Yield 5,000 Pages at 5% Coverage Compatible Toner Cartridge with part numbers A0WG02F TNP20K For use in Konica Minolta Magicolor 3730DN Do it Wiser Smart Toner Cartridges are covered by 1 year warranty against defects Cartridges certified to work | ISO 9001 quality assurance | ISO 14001 environmental management | RoHS Lead Free