Clear plastic water hose for most 356 coupes with sunroof. This is the hose that runs through the engine compartment, on both sides, to the back of the car.  Reutter Coupe, Karmann Coupe and Cabriolet with Removable Hardtop, as well as, the different years of vehicles A,B and C. The length for one car would probably be around 6 feet. 356A and 356B models ran the tube into the top of the engine compartment and exited out the bottom, whereas, the 356C models had the exit just behind the rear quarter windows. All of these versions required different lengths of hose and after checking the Factory parts book, it stated that the hose was sold in running lengths. Two required. Sold by the meter.