Review on CYCOBYCO Brake Bleed Bleeding Ultimate by Mario Anderson

I bought this to upgrade my existing brake bleed kit which did not include the SRAM BleedingEdge caliper bleed kit. When I first used it, I thought something was wrong. I connected the tip to the brake bleed port and nothing happened. Then I watched a YouTube video that said first loosen the inside of the exhaust port with a 4mm allen wrench so that it is just closed. Then insert this tool and when finished, rotate the connector to open/close the vent hole. It worked great, there were no problems with this system. This is a nice addition to my toolbox.