You can buy fancy tool kits and tote them around with you. Many of the tools you will never use, only to give them a free ride around the country. Figure out what tools you need buy going around the trailer and select tools that fit the screws, nuts and bolts that the trailer is put together with. Wrenches my be socket, adjustable, open end, whatever would work the easiest and best. When you are done you will have a streamlined set of tools to do the job. You will tote around much less to be more effective. Include an adjustable wrench and a good pair of pliers to hold the nut while you screw the bolt. My tools are rolled up in a canvas tool pouch which contains everything I need. It fits under the back seat of the truck, out of the way. The more you camp the more you will find out what you actually need. Good Luck