The 1/2 in. CTS x 1/2 in. NPT ProLock Push-to-Connect Male Connector (10-Pack) is the easiest and most dependable way to join Copper, PEX or CPVC pipe in any combination to a female threaded connection with no solder, glue or tools required. JG ProLock fittings use a collet with stainless steel teeth that grips the pipe when fully inserted and an EPDM O-Ring to provide a permanent, leak-proof seal. When twisted into place, the locking cap locks the pipe in place and creates an audible click, ensuring maximum security. Disconnection is just as easy with no tools needed, simply twist the cap turn counterclockwise to unlock then depress collet against the fitting to remove the pipe. ProLock Twist-to-Lock fittings are suitable for hot and cold potable water and hydronic heating applications. The have been specifically designed for the Professional Plumber. Code approved for behind-the-wall installations. 25-year warranty. Color: Black. Material: Plastic.