1/2" x 1/2" MNPT, Pex Barb Adapter Elbow, Use To Transition From Pex On 1 Side To Either An NPT Threaded Pipe Such As A Shower Fixture Or To A Sweat Connection, Compatible For Potable Water Distribution & Hydronic Heating Applications, Can Be Used In Both Stainless Steel Clamp System Or A Copper Crimping System.