The boxes can be individually assembled due to the different sizes. Safe and organized - small parts like nails, dowels, screws, bits, drills, or jigsaw blades are sorted, easily accessible, and stay in place. When used in the SYS-SB, the transparent lid and the swiveling upper compartments allow for immediate visibility of the contained parts. Additionally, the SYS-SB can be configured according to individual needs thanks to the insert boxes in various sizes.