These are original Waco air vents. The cotton hose was smaller, but I adapted some 1 3/4 scatt Screws keep the ball in the mount. They swivel nicely and look cool! No hoses yet I need to find out what the control lever that attaches to this valve looked like. They are missing in action. Hoses are in. I have no idea what is supposed to be on the end of the arm to acuate the valve Busy wing root. Large cannon plug for all electrical, two fuel lines and the vent lines. Left side has pitot/static as well. This unit has been installed backwards. The hole for the actuator rod should be on the front. Thanks to some help from the folks at the National Waco Club site, I have broken the code on the control knobs and have it all hooked up correctly now. A little adaptation, link rod made from aluminum tube. It will all have to come off when I pull the wings for cover. Found these little knobs in a box labeled vents. Easy button!!