A package with a locking mechanism provided with a package main body to be
inserted into and removed from a cage and locked fastenably and releasably
with the cage, a locking-dislocking mechanism for locking and dislocking
the package main body with the cage, and an operation lever for the
locking-dislocking mechanism wherein the locking-dislocking mechanism is
attached to the package main body, the operation lever has a plurality of
members to be pivoted detachably on the package main body, and any one of
the members to be pivoted which is selected arbitrarily therefrom is
pivoted on the package main body so as to rotate the operation lever.
