Do you ever get to the dive site and realize you forgot to install your drysuit hose? Or maybe, you forgot to put one of your plugs back into your regulator. Mishaps like this happen often and can ruin a what should be a good day of diving. Every diver should carry a Multi-Tool like this one from Poseidon. With 4 different sized wrenches, 3 Hex Keys (Allen Wrenches), 2 flathead screwdrivers and one Phillips head screwdriver, this tool has everything you need to fix the problem and save your dive.