These 4mm DDS tape cartridges are 150 meters long and store 20 gigabytes of uncompressed data and 40 gigabytes of compressed data. The cartridges last up to 1,000 write/rewrite cycles, feature a heat-resistant shell that withstands high temperatures, an anti-static shell that attracts less dust and helps maintain low error rates, and internal components that are designed to reduce torque and provide better drive compatibility.