Flexible tube easily attaches to the downspout with sheet metal screws (not included). Can be bent into the desired water flow direction, or can be buried out of sight. Retains shape. Fits 2 in x 3 in or 3 in x 4 in downspouts. Expands from 22 in to 55 in , to get water further away from the foundation. Two or more sections can be snapped together to get longer lengths.