PURPOSE: To provide a robot hand with which plural disk-shape articles such as hard disks can be collectively transferred from a cleaning container to a carrier container or vice versa effectively and automatically.

CONSTITUTION: Plural grooves 73a having cross sectional surfaces of a nearly V-shape in which circumferential edges of inner holes Da of hard disks D can be inserted with play are formed at a specified interval along length in an upper part of a rod member 73 which can be inserted into the inner holes Da of the hard disks D, and the rod member 73 is carried up after it is inserted with play into the inner holes Da of the plural hard disks D arranged and contained in a carrier container 31, when the hard disks D can be held with the circumferential edges of the inner hole Da engaged in the grooves 73a.