This 3/8" I.D. fuel hose connects your fuel pump to the carburetor. Since there are so many fuel pumps and carburetors out there, sometimes there is no way you can have a preformed line. Here is a neat and clean way to connect them. This kit requires assembly and includes two metal lines with 5/8"-18 fittings, a 24-inch length of rubber hose, and two pinch clamps. Cut the hose to length, install both ends, and pinch the clamps on with side cutter pliers. You can rotate the two ends to get the perfect alignment. This is awesome detailing item for your car and just good maintenance.