The multi-tool comes with every Delta toilet sold at retail. It is a single tool that can be used to complete the entire installation quickly and easily. One side of the tool is used for the nuts and washers that attach your bowl to the floor and your tank to the bowl. The other side of the tool can be used as a wrench to tighten your water supply line to the water connection in the wall. This tool also comes with a Phillips and flathead screw driver bit to assist with the seat installation.