Hopefully someone can share some insight to assist me. I went to look at a faucet that I agreed to remove expecting to see what I have seen at my parents house and my house. I get under the sink with WD-40 expecting corroded threads etc but what are these thin U shaped brackets? Better yet how do I get them off. I had my basin wrench but that doesn't look like that's going to work. So before I got started on the project I figured I had better figured this part out first. Any suggestions?