One 4 in. x 29 1/2 ft. corrugated perforated drain pipe with sock. Slotted all around the pipe. Previously used. Was retrieved when renovating patio. All debris has been cleared from the pipe and the pipe is in good condition. It was used to add drainage to a retaining wall. It can be reused for the same purpose or to move water away from foundations. The pipes protective sock has some tears but the majority of the sock is intact.