3/4" x 3/4", FNPT Pex Barb Drop Ear Elbow, Used To Transition From Pex To NPT Threaded Pipe Such As Shower Arms Or Tub Spouts, Have Mounting Ears With Holes For Securing To A Surface Such As A Stud Or Wall & Provide Additional Stability, Compatible For Potable Water Distribution & Hydronic Heating Applications, Can Be Used In Both Stainless Steel Clamp Applications Or Copper Crimping Systems.