These pipe adapters allow you to connect corrugated pipe to SDR 35 or SCH 40 pipe. Do you have a problem where you have SCH 40 or SDR 35 PVC pipe that you need to connect to the corrugated pipe? If so, we have the best solution for you! Attach one end to the corrugated pipe, and then attach your PVC pipe to the other end, and you're done. No tools needed other than your own hands.