The Insta-Plumb straight coupling allows for a faster and easier install with no nuts washers tools or glue needed. The simple push-fit connections of Insta-Plumb products connect quickly to 1-1/2 in. O.D. size plastic drain pipes and are great for hard-to-reach or confined areas under a sink. The pipes are removable/reusable with a release tool and can be re-positioned for perfect alignment. This kit features a stainless steel grip ring that holds the connection tight and an O-ring for a leak-free seal so you can install with confidence. Combine this item with other Insta-Plumb products to complete your under sink drainage project quickly, easily, and reliably. It is not for use with brass tubing, pipes under pressure, or potable water.