Speedy Inks - Compatible 6 Pack Black POS Ribbon Cartridges - RC300B For use in: Star Micronics SP300, SP310, SP320, MP300, MP309, MP311, MP320, MP330, MP341, MP312F-N, MP317F, MP342F-FX, MP382FW, MP3312F3, MP321S, MP322S, MP323S, MP352S, SP311, SP312, SP316, SP317, SP321, SP322, SP340, SP341, Samsung ER-350, Samsung ERC-350F, Samsung ER-550, Samsung ERP-200, Samsung SMP-200, SP342, SP347, Samsung SRP-100A, SP348, SP349, Samsung SRP-100B, Samsung SRP-100C, Samsung SRP-100D, Samsung SRP-200, Samsung SRP-250 Star Micronics SP372, SP311F, SP312F, SP317F, SP341F, SP342F, SP347F, SP349F, SP321S, SP322S, SP323S, UP389, IBM SureOne 4614, Panasonic JS-7500, Panasonic JS-9000 Shelf Life: 48 Months | Color: Black The use of aftermarket replacement cartridges and supplies does not void your printer's warranty