Maxtor D540X-4K - Manual (Page 21)

Installation
Maxtor D540X-4K 20.4/40.0/60.0/80.0 GB AT 3-3
(KIWTG   Drive Packing Assembly of a Polypropylene 20-Pack Container
Note: The 20-pack container should be shipped in the same way it was
received from Maxtor. When individual drives are shipped from
the 20-pack container then it should be appropriately packaged
(not supplied with the 20-pack) to prevent damage.