I Installed speed bleeders tonight so I could change my brake fluid. I got three of them to work but the one on the front left caliper I couldn't get any brake fluid to come out of it. I opened it several times 1/4 to 1/2 turn and nothing would come out. A little fluid was coming out of it when I took out the OEM bleeder and installed the speed bleeder. I suppose it's possible to get a bad one, or am I doing something wrong? Other than that, the speed bleeders are worth the money. Very easy to install. It takes about one min. to install each one. They make it a one man job for brake bleeding.