The SharkBite Ice Maker Outlet Box with Water Hammer Arrestor features a 1/2 inch push-fit connection and can be used with copper, CPVC or PEX lines. SharkBite Push-fit connections decrease the time and effort needed to connect water distribution pipe. There is no glue, soldering or crimping needed. Simply cut your pipe, debar, mark the pipe approximately 1 inch (for proper insertion depth), install pipe to proper depth and you're done. Water Hammer Arrestor is integrated into valve to protect your homes plumbing system and your fixtures from water hammer.