Review on Cal Van Tools 247 Brake Bleeder by Evan Zurlo

Tested when it arrived - could blow through the end of the valve but not through the hose so the valve worked just had to flip the valve the way the hose originally attached the exit page. There are instructions on the back of the box, although I never found the reason for the little black and red plastic caps, except maybe to tighten the gasket between the 1/4" hose and the outlet valve. It worked. well for 3 of 4 wheels and then started going around both ways I think the best way would be to just install breathers around the speed or use one of those as a check valve with hose then you will have a better valve that will last a long time.. Can get through your brake bleed job just don't expect it to last a lifetime.