Shop At 247 &reg; Compatible Toner Cartridge Replacement for Brother TN450 + DR420 (2 Toner, 1 Drum, 3-Pack) Shop At 247 brand cartridge is sold exclusively by Shop At 247 Shop At 247 offers One-Year Warranty against defects Shop At 247 offers 180 Days Money Back Guarantee Toner: Up to 2,600 Pages at 5% Coverage; Drum: Up to 12,000 Pages at 5% Coverage These replacement cartridges were professionally manufactured in an ISO 9002 factory