The product set includes 1 PC of long pipe dredging brush which is 78.7' long and suitable for cleaning the sunroof drain the auto, and 2 PCs of tube brushes which are 9" long. The long pipe brush is suitable for the auto drain dredging. It is slim and has a diameter of 0.08“. It has a bristle brush head, and it is easy to clean the blockage inside the drain. It is also suitable for cleaning the drain of the bathtube and the shower.