I have two 4" Corrugated Drain Tubes, each with end piece pop up drains on one end and 4" gutter attachments on the other. One is approximately 25' long and the other is about 20' long. The 25 foot has two areas were a shovel scraped, but can taped with drain tape or cut and coupled back together, but honestly, drain tape would seal backup. These are a few months old, but we decided to pulled them up and go with PVC pipe when we had concrete slabs poured at front and rear of house. The pop-ups alone are about $30 each new, so asking price is fair.