Tool storage

A container assembly comprising:

• a first container comprising:
• a first rear female coupler configured at a top face of the first container, the first rear female coupler comprising a first rib extending above a first coupling surface;
• a second rear female coupler configured at the top face of the first container, the second rear female coupler comprising a second rib extending above a second coupling surface, wherein the first rear female coupler and the second rear female coupler are arranged in a first row along the top face of the first container;
• a first front female coupler configured at the top face of the first container, the first front female coupler comprising a third rib extending above a third coupling surface;
• and
• a second front female coupler configured at the top face of the first container, the second front female coupler comprising a fourth rib extending above a fourth coupling surface, wherein the first front female coupler and the second front female coupler are arranged in a second row closer to a front of the first container than the first row;
• a second container comprising:
• a first rear male coupler extending from the second container, the first rear male coupler comprising a first tongue engageable with the first rib such that the first tongue engages between the first rib and the first coupling surface, wherein attaching engagement between the second container and the first container takes place when the first tongue and the first rib are engaged, thereby restricting separation between the second container and the first container;
• a second rear male coupler extending from the second container, the second rear male coupler comprising a second tongue engageable with the second rib such that the second tongue engages between the second rib and the second coupling surface, wherein attaching engagement between the second container and the first container takes place when the second tongue and the second rib are engaged, thereby restricting separation between the second container and the first container;
• a first front male coupler extending from the second container, the first front male coupler comprising a first retractable tongue engageable with the third rib such that the first retractable tongue engages between the third rib and the third coupling surface, the first retractable tongue actuating between a locked position and an unlocked position, wherein attaching engagement between the second container and the first container takes place when the first retractable tongue and the third rib are engaged when the first retractable tongue is in the locked position thereby restricting separation between the second container and the first container;
• and
• a second front male coupler extending from the second container, the second front male coupler comprising a second retractable tongue engageable with the fourth rib such that the second retractable tongue engages between the fourth rib and the fourth coupling surface, the second retractable tongue actuating between a locked position and an unlocked position, wherein attaching engagement between the second container and the first container takes place when the second retractable tongue and the fourth rib are engaged when the second retractable tongue is in the locked position thereby restricting separation between the second container and the first container;
• wherein disengaging the second container from the first container can be performed after actuating each of the first retractable tongue and the second retractable tongue to the unlocked position.