as the longest pick up tube and put a cap on one end and a screw cap on the other to hold the three sections of tube. The only down side to the pump was the storage of the pick up tubes while cruising. Now I just do a quick cleaning, slide them into the case and toss them in the bottom of a locker. I have had the same one for 6 or 7 years and the device s about as good as it gets. IMHO