Designed to store and protect expensive, delicate glass and capillary GC columns. Available in two sizes, one holds five columns, the other ten columns. Each has a seven bin storage compartment on the top with a hinged clear acrylic top, ideal for storing ferrules, fittings, small tools and tubing. Larger items like crimpers, pliers and wrenches can be stored in the five bin tool holder on the side. Optional light-proof door.