Premium enclosure for your important data 
ToughTech is a premium quality drive enclosure meant to make sure your data is safe without sacrificing portability or your wallet, all while ensuring that you'll have all the free disk space you need. ToughTech's aluminum and fanless design also makes it quiet and beautiful. In other words, ToughTech looks great on your desk, performs like a champ and it won't eat your lunch.

Anyone can use a ToughTech
ToughTech is used by anyone who needs more storage space for backups, music, games, Internet downloads, photography, audio/video editing or server storage; and they use it everywhere from homes to government laboratories.

Shock absorbers for your hard drive
  Your car has shock absorbers - so why not your hard drive? ToughTech introduces FlexMount Anti-Shock Protection. FlexMount is a shock absorber that mounts between the drive and the enclosure protecting your data against bumps and vibrations.

For propagated with drives see below:

TTE-250 add 1 X 250GB Serial ATA 3.5-in. Hitachi 8MB/7200rpm 
TTE-500 add 1 X 500GB Serial ATA 3.5-in. Hitachi 16MB/7200rpm
TTE-750 add 1 X 750GB Serial ATA 3.5-in. Seagate 32MB/7200rpm
TTE-1000 add 1 X 1TB Serial ATA 3.5-in. Seagate 32MB/7200rpm