In this video, we learn how to connect flexi-tails properly. First, take your flexi-tails and grab one with a female end that will screw onto the end of a male. After this, use an isolating valve to fit the compression onto the valves and then tighten it up. Screw the flexible tail onto the end of this. Be careful buying this off Ebay, because a lot of fittings will not screw onto a compression knot. It is very simple to make this, you just have to connect the two tails and make sure they are sealed tightly. When finished, use these as you wish.