RKI Chest Tool Box Black Steel Model UST60CBRKI Chest Tool Box Black Steel Model UST60CB *Only intended to mount on a flat bed or chest style install* Hull of box is constructed of 14 gauge cold rolled steel Welds are full arc welds, no spot welds Box incorporates a 4 1 2 deep top opening compartment Top opening compartment has adjustable divider slots on 2 centers Lid is constructed of 14 gauge cold rolled steel, with a 14 gauge cold rolled steel inner stiffener Spring type lid props assist in