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Colour: Black. Page yield: up to 1,350. Compatible with: LBP631Cw, LBP633Cdw, i-SENSYS MF651Cw, i-SENSYS MF655Cdw, i-SENSYS MF657Cdw, i-SENSYS LBP631Cw, i-SENSYS LBP633Dcw, i-SENSYS MF651Cw, i-SENSYS MF655Cw, i-SENSYS MF657Cw. Laser toner cartridge.