Chrome-plated stop valve adapter, 1/4″ SB (SharkBite) x 3/8″ OD (outside diameter) compression. The fitting can be used with copper, CTS (copper tube size), PEX (cross-linked polyethylene), and CPVC (chlorinated polyvinyl chloride), and is rated at 200 F, 200 psi (pounds per square inch). It is made of 1-piece DZR (dezincification- resistant) brass. Fittings can be buried and placed behind drywall. Fittings are removable and reusable. Product is individually bagged.