Genuine Canon Dum Cartridge G, ref 1511A003AA, 1511A003[AA], (91)1511A003(92)AA, FZ6-7093 drum kit. For the Canon CP-660, CP660, CP-680, CP680 & IRC-624, IRC624. Also, this is the same drum unit as the Hewlett Packard C4153A and can be used in the HP LaserJet 8500 & 8550 family of machines The yield is approx 12,500 prints @ 5% coverage