The 10 Genuine Epson ERC-38B Black Printer Ribbon Cartridges works with the following Epson models: Epson TM-U200D, Epson 300A, Epson 300B, Epson 300C, Epson 300D, Epson U370, Epson U375, Epson IT-U375. Each ribbon has (3M characters). This product includes (10) Genuine Epson ERC-38B black ribbons that are brand new, factory sealed in the original boxes. Fast and Free UPS ground shipping.