these ones from the usa -

http://www.transintl.com/store/categ...?category=2787

include the drive tray adaptor on the same piece of metal.

Install any 2.5? SATA Solid State or Hard Disk Drive in Mac Pro using Pro Sled 2. Pro Sled 2 offers flexibility in choosing type of drive [Solid State or 7200RPM Hard Disk Drive]. Pro Sled 2 is a must have accessory in any high volume production setup
http://www.transintl.com/store/categ...?category=2787