SharkBite PEX-B is a cross-linked polyethylene tubing designed for use in residential and commercial plumbing applications. PEX pipe is flexible and easy to work with, which reduces the number of fittings needed to complete a job; reducing cost and leak points. PEX is also extremely durable and corrosion/freeze resistant. SharkBite PEX is compatible with brass or plastic barb fittings using copper crimp ring or stainless steel clamp connection methods or push-to-connect fittings.