Genuine OKI toners - rainbow pack 1 x 43865708 (8k) black toner 1 x 43872307 (2k) cyan toner 1 x 43872306 (2k) magenta toner & 1 x 43872305 (2k) yellow toner For the OKI C5650 & C5750 machines Not a huge saving but every bit helps!