The product is a set of three one is open the rest are sealed FujiFilm 4mm DAT DDS cleaning cartridges, designed for use with DAT DDS3 and DDS4 models. Made in Japan, these cartridges offer 50 cleanings each and are specifically designed for cleaning purposes. With a focus on data storage and cartridge maintenance, these cartridges are a reliable solution for keeping your data tapes in optimal condition and ensuring maximum storage capacity. Ideal for professionals in the computer and networking industry, these cleaning cartridges provide a convenient and efficient way to maintain your data storage devices.