Triton Products 3-220B LocBin Stacking, Hanging, Interlocking Polypropylene Bins 7-3/8-Inch L by 4-1/8-Inch W by 3-Inch H Blue 24 CT Unique dual interlocking channel system slides and locks bins together guaranteeing bins will not collapse, cave in or topple into one another Mount to wall using the 5-600 wall mount rail system, on louvered panels or stack on a flat surface to provide multiple storage options for small items Bottom interlocking rail allows bins to be nested offering the user a smaller footprint in tight spaces Extra deep groove system accepts bin dividers that stay in place when removing and replacing items in the bin Anti-slide feature in the channels ensures that stacked or hanging interlocked bins will not slide out from the front preventing spillage of parts