Storage device system

A tool cart comprising:

• a plurality of wheels configured to support the tool cart on a surface such that the tool cart can roll along the surface;
• a base including a top side and a bottom side opposite the top side, the plurality of wheels adjacent the bottom side;
• a plurality of connection recesses defined by the base, each of the plurality of connection recesses including a rear wall, a front wall opposite the rear wall, a first side wall extending between the rear wall and the front wall, a second side wall opposite the first side wall and extending between the rear wall and the front wall, a first wing extending from the rear wall towards the front wall and from the first side wall towards the second side wall, and a second wing extending from the rear wall towards the front wall and from the second side wall towards the first side wall, each of the plurality of connection recesses configured to be removably coupled to a tool storage container, wherein the tool storage container slides in a first direction relative to the base and generally parallel to the top side to attach the tool storage container to the base, and wherein the tool storage container slides in a second direction, opposite the first direction, relative to the base and generally parallel to the top side to remove the tool storage container from the base;
• and
• a first brake configured to inhibit the tool cart from rolling when the tool storage container is being coupled to the base.