I have a reverse osmosis kit, and the faucet has a really long bolt which you use to attach it to your countertop. I can't get a tool up there to tighten it because the sink basin is in the way. I wonder if there is something like a sleeve I can put over the bolt so that the tightening nut sits much lower. Then I can get at it more easily with a tool. Does this thing have a name?
Thanks