Works surprisingly well. I thought it was going to be a struggle but he cut a hole in the wall of my brick house to run the wire/pipe like it meant nothing. I see people saying it broke after a few uses. But for half the price of a similar one at a major hardware store, then if it only holds 10 to 20 holes it's $15. But (and I've only used it once) it didn't show much sign of giving up. In fact, it seems very heavy/strong. I'd be surprised if it was "broken" once people say. Although who knows.