Unless you ordered odd shank sizes make sure to use a nice, sharp 7/8th inch hole saw to cut the fittings. It will fit operfectly, almost screws right in. I've got a friend who used a 1 inch hole saw and the faucet is sort of wobbly. Also, one more tip, may be self evident... Make sure to inspect the interior to see where it will come out. I've seen it done where it comes out right between shelves, on the shelf itself. Works but not very accessible or pretty.