ADS Culvert Coupler is for storm drainage use. The Culvert Coupler for 15 in. corrugated HDPE pipe is largely used for field repairs and for slope drains where extra pull-apart resistance in needed. Made of corrugated HDPE material, the ADS is strong but lightweight, and wraps around pipe ends to make a secure joint. And this culvert coupler's strong construction helps withstand weather and human elements, and does not become brittle over time.