Black On Yellow label Cassette Replace TZ621 (9mm). Brother PT-1010 PT-1090 PT-1230PC PT-1280 PT-1280DT PT-1290VP PT-1830VP PT-2420PC PT-2430PC PT-2450DX PT-2500PC PT-2700VP PT-2730VP PT-300BT PT-3600 PT-550 PT-7100VP PT-7500 PT-7600VP PT-9200DX PT-9200PC PT-9400 PT-9500PC PT-9600 PT-9700PC PT-9800PCN PT-D210VP PT-D400 PT-D800W PT-E100VP PT-E110VP PT-E300VP PT-E550WVP PT-H100 PT-H101 PT-H101C PT-H105 PT-H110 PT-H200 PT-H300 PT-H500 PT-P700 PT-P750W PT-P900W PT-P950NW RL-700S Label Printers.