The DLT III half-inch Tape Cartridge has a 10GB native capacity 20GB compressed. It works with the DLT 2000 DLT 2000XT DLT 4000 and DLT 7000 drives from Quantum. The metal particle (MP) is .498 inches wide and 1200 feet long. It features: durability with up to one million passes with a negligible impact on soft error rates and a 30-year archival life; a write-protect switch that prevents accidental erasure; a shock-resistant cartridge combined with a durable plastic container that protects against corrosion; and a patented tape leader which delivers consistent tape motion while a unique tape/reel locking mechanism prevents tape slack.