Patent ID: 7513364

Claim:
A casing comprising: a base defining an accommodating space, having a top opening, and including a surrounding wall that surrounds said accommodating space and that defines said top opening; a cover coupled pivotally to said base, said cover being pivotable relative to said base from an opened position to a closed position, where said cover covers said top opening in said surrounding wall of said base; a locking unit including a first locking mechanism for retaining selectively said cover in the closed position, said first locking mechanism including a locking protrusion formed on said cover, a U-shaped receiving groove that is formed on said cover around said locking protrusion, and that includes a pair of opposite groove sections and a transverse groove section, and a U-shaped handle that is coupled pivotally to said base, and that includes a pair of opposite arms and a transverse arm, said handle being pivotable relative to said base from a first unlocking position to a first locking position, where each of said arms is received in a respective one of said groove sections, and said transverse arm is received in said transverse groove section and engages said locking protrusion when said cover is disposed at the closed position; a mounting seat adapted for holding tools, said mounting seat being disposed in said accommodating space of said base and being fastened releasably to said surrounding wall of said base, said mounting seat including a plurality of tool holders, each of which is formed with a plurality of spaced apart bores, each of said bores being adapted to receive an end portion of a respective one of the tools, said mounting seat being formed with a plurality of ridges, each of which has opposite first and second walls, said second wall of one of said ridges cooperating with said first wall of an adjacent one of said ridges to form a V-shaped groove, each of said tool holders being mounted releasably to said first wall of a respective one of said ridges: and a fastening unit for fastening releasably each of said tool holders to said first wall of the respective one of said ridges, said fastening unit including: a plurality of fastening holes that are formed in said first wall of the respective one of said ridges, a plurality of hook fasteners formed on each of said tool holders, each of said hook fasteners engaging a respective one of said fastening holes when said tool holder is mounted on said first wall of the respective one of said ridges.