US Patent 7931143 Toolbox

A toolbox includes two pivotally connected shells, a buckling unit and at least one tool-holding unit. Each of the shells includes at least two primary partitions formed on an internal side thereof, a compartment defined between the primary partitions, a row of ribs formed one each of the primary partitions, and gaps each defined between two adjacent ones of the ribs. The bucking unit can buckle the shells to each other. The tool-holding unit is engaged with the rows of ribs of selected one of the shells.