Ultrium 800GB Storage Media Kit provides a complete media solution to improper storage, improper transport and infrequent tape drive cleaning. Kit contains 20 LTO-3 Ultrium 800GB Cartridges, one Cleaning Cartridge, one media case, colored labels, and a tape backup guide. Cleaning cartridge offers up to 15 cleanings. Labels minimize the chance of the wrong tape being inserted into the drive. Each molded case has double walls to protect media against thermal shock while the molded dividers cradle each piece individually. Metal latches ensure a tight seal. Multiple cases can be stacked on top of each other to save space, and each case can be locked (lock not included).