1/2" x 7/8", Swivel Toilet Connection Elbow, Easy To Install, Connects Pex Tubing To A 7/8" Male Threaded Connection AtA 90 Degree Angle, Suitable For Potable Water Distribution & Hydronic Heating Applications, Sharkbite Pex Poly Alloy Barb Fittings Can Be Used In Both Stainless Steel Clamp System Or Copper Crimp Ring System.