[76liftedshortie]

They work great. Got one at auto zone that was a hand pump. You connect the clear tube to the bleeder screw, unscrew and pump a couple time. It creates a vacuum and draws the brake fluid from the master cylinder through the lines. There is a collection bottle connected to the other side of the hand pump where the fluid runs into. Just make sure the master cylinder never goes empty. I would have spent all day bleeding the old fashioned way after I replaced my front to rear brake line.