这个模型是用来给toughbuilt堆叠工具箱固定在史丹利折叠推车上使用的，模型用了一些m5*20的螺丝固定，其实只用装前面两个卡扣箱子就可以卡住了，而且折叠车所有的功能都不会影响/This model is used to fix the Toughbuilt stacking toolbox to the Stanley folding cart. The model is fixed with some M5 * 20 screws, but in fact, only the first two buckle boxes can be installed to hold it, and all the functions of the folding cart will not be affected