Toshiba e-Studio Genuine Ddeveloper Unit Supplies are specifically designed for the following Models: Toshiba e-Studio 2006 ,2007, 2306, 2307, 2506, 2507, 2303A, 2309A, 2809A,2303AM, 2803AM, 2523A, 2523AD,2323AM, 2823AM, 2829A Photocopier Machines. It has net weight 450gm, maximum yield ± 2,00,000 pages @ 5% average coverage.& get a great value for everyday business Coping / Printing.