With the NIBCO 4 in. x 3 in. ABS DWV 90° Spigot x Hub Closet Elbow, you can complete the installation of your DWV system. The fitting features an ABS construction, but be sure not to use a primer on ABS before cementing. The ABS DWV 22-1/2° elbow features a hub x hub connection and is used to change the direction of flow. Color: Black.