美国采购需求：长箱、狩猎箱、弹药箱、塑料箱、设备箱、防水硬箱

I came across your catalog and am particularly interested in your waterproof plastic carrying case with wheels. It seems like a robust solution for my needs, but I was wondering if there's a possibility to extend the length to accommodate a dimension range of 66-68 inches. This enhancement would make it much more suitable for my applications. Additionally, could you provide me with information regarding the case's weight capacity, available color options, and any customization features? I'm keen to understand how this product could be tailored to better fit my requirements, especially if there's flexibility in design or additional accessories available. Looking forward to your insights!