These are excellent storage boxes. Actually thebest we’ve seen. Made with polypropylene basesand “gin clear,” strong, polycarbonate lids. Goodhinges. Positive full length latch. Rounded bottoms.Dividers for numerous configurations. Everyone needs at least one of each. Made in Japan SKU Description SIZE (inches and mm) M-48 Medium shallow. 8.07 x 5.71 x 1.1 inches 3 fixed partitions, 24 dividers, 205 x 145 x 28 mm yields up to 28 compartments M-49 Medium deep. 8.07 x 5.71 x 1.57 inches 2 fixed partitions, 18 dividers, 205 x 145 x 40 mm yields up to 21 compartments M-50 Large shallow. 9.65 x 7.48 x 1.1 inches 3 fixed partitions, 32 dividers, 245 x 190 x 28 mm yields up to 36 compartments M-51 Large deep. 9.65 x 7.48 x 1.57 inches 3 fixed partitions, 32 dividers, 245 x 190 x 40 mm yields up to 36 compartments