Stackable buckle storage box

After the increase in the number of printers, the number of tool accessories also increases. My previous storage boxes had difficulty balancing both expandable capacity and buckle connections, so I had to create multiple boxes to store these accessories. This is very inconvenient, so I want to design an accessory storage box that meets the requirements of modularity, stackable expansion, snap on connection, and small size printers for easy printing. That's what you see here. Firstly, regarding the size, the box size is 160 * 130 * 41.8mm, and the internal storage size is 150 * 120 * 36mm. The internal length of 150 is designed to accommodate the largest hexagonal wrench tool assembly under the limitation of small size. The 36mm height allows for a double-layer stacking of A-series nozzles when paired with an A-series nozzle storage slot (my A-series nozzles are quite numerous, and Kobra3Max nozzles are directly placed in the universal storage module). The short edge is 130mm wide and printed with snap fasteners on both sides, eliminating assembly troubles. One side of the short edge is equipped with a label area of 30 * 20mm, which can be labeled to indicate the type of tools and accessories stored. The box and buckle are printed together, with each layer of buckle holding the upper box body or lid upwards. In theory, many layers can be stacked upwards. All files have been uploaded in STP format