Abstract: The present invention relates to a tray used for transporting a number of hard disk drive heads (HDD heads). The tray (10) according to the invention has small-projections provided on a part of the surface of the positioning part (12, 15) which contacts the HDD head (30) when the HDD heads (30) are set in the tray (10). An example of the small-projection (20) is a hemispherical projection (20) whose height is slightly larger than the thickness of the wiring (34) (e.g. about a few to several hundreds of micrometers). Another example of the small-projection is a ridge (21) of about one to several hundreds of micrometers in diameter and about a few millimeters in length. By virtue of such a design, the friction between the wire-applied surface of the HDD head (30) and the positioning part (12, 15) of the tray (10) is substantially reduced because they contact with each other only at the top of the small-projection (20, 21).