Abstract: This invention relates to a tool case and in particular to one including a base container having two adjacent corners each formed with a hole, a first intermediate container disposed on the base container and having a corner with a hole and an adjacent corner with a slot, a rod inserted into the hole of one of the two adjacent corners of the base container and the hole of the first intermediate container, a second intermediate container disposed on the first intermediate container and having a hole at a corner, a cover disposed on the second intermediate container and having a L-shaped hole at a corner, and a L-shaped axle engaged with the hole of another one of the two adjacent corners of the base container, the slot of the first intermediate container, and the L-shaped hole of the cover.