It is best not to sit on the top, after all, the inside is empty, if the acceptance is concentrated at a certain point, it is easy to cause slight deformation of the aluminum box cover.
Product information does not explicitly mention if the lock can be rekeyed or replaced. However, it states that the truck toolbox comes with a stainless steel locking mechanism and two exclusive keys for protection against theft.
The product description states it is constructed from aluminum alloy with a diamond tread pattern and double-sided power coating process that helps prevent rust, corrosion and abrasion. However, it does not specifically mention the durability of the coating against scratches.