Is the Ox air lockers the only ones that would not need tools if the tube breaks? If the cables on the mechanical Ox lockers break or stretch would you need tools to replace the cable?Cables stretch, electrical connections corrode and wires break. Sure you can rip an air line off but i carry an extra length of tube with me in my winching bag it wouldent take long to replace and would require no tools. I dont run a fancy onbord air system i just run a cheap Viair 90c it dont run much and when it dies i can rebuild it or just buy a new one. Air compressors dont last long mounted under the hood they are not a great idea for airing up tires with i would rather have one in a bag inside the cab to use for doing that they will last much longer.