NDS 451 HDPE Corrugated Adapter, 4-Inch, for Spigot X 4 inch Corrugated Hub Connections, for use with 4 inch Drain Pipes & Fittings, Black

Worked fine

This fit perfectly in my water drainage system where I have two lines combined to one hopefully preventing another clogged pipe. I am surprised the local hardware stores don't carry this product.

Product does what it is suppose to do. I deleted one star because it was made in china. There are domestic manufacturers inUSA that make this product located in Ohio.

Fit perfect

Amazon suggests this is would work with NDS pop ups but it is not a secure fit and slips right off.You need to use PVC cement and a couple of set screws to make it not come off

Fits perfectly in any 4 inch Corrugated Pipe or PVC Pipe. Locks tightly and is working well by raising my Pop Up Gutter Drain, located in the lawn. Raises the Pop Up so it quickly allows the Gutter Water to Drain on the Lawn/ Down an incline. Good Price and another Quality NDS Product.

These are a little pricey but they work and they're a lot better than a stick in the eye. Good to combine those 2 different kinds of corrugated pipe that, for some fing reason they made the 4" slightly different

As advertised.