Due to the serviceability of the ENDO tank, disassembling the tank may be required from time to time for repair or refinishing. If you plan on disassembling your ENDO tank, you will need to replace all of the hardware and o-rings that you remove. AccuAir makes this quick and easy with this ENDO tank hardware kit. This kit will include 16 end cap bolts, 16 end cap bolt o-rings, and 2 end cap seals. This will be everything you need to finish up your disassembly and reassembly.