Great tool if you are careful not to use force or are trying to work quickly. The smaller the faucet, the harder it is to stop and turn without damaging it.
I love these things. I carry one in my pocket when I reattach the sight covers, and if I get a clumsy screw that wants to cross a thread, I change out my Philips nozzle and run it through once; Problem solved. The screw fits right in.