Very poor quality hot and cold braided lines that run back to the y connection fitting  that ties into the faucet..So bad that it’s almost impossible to get a tight lead proof fit..The hot line is now kinked and there I’m afraid that it will completely fray off. I’m not a rookie at installing a new vanity and faucet set but this one has got me frustrated beyond belief. I have purchased better quality braided fittings and if this doesn’t resolve my leak I will have to look elsewhere.This faucet set is beautiful to look at however I may have to remove it and return