Compatible
6 Pack
CR300B Black Ribbon compatible with:
SP 300, 311, 312, 316, 317, 320, 321, 322, 323, 341, 342, 347, 348, 349
MP 300, 312, 317, 321, 322, 323, 324, 342, 347, 352, 382
The use of compatible supplies does not void your printer warranty.