Versatile Compatibility: Designed for wall supply, our wall supply elbow features a 1/2NPT inlet and 1/2 IPS outlet, offering broad compatibility with most showerheads and pre-installed wall pipes. It's the perfect solution for your shower installation, ensuring a seamless fit Built to Last: Made with a high-strength brass valve body, this wall union water supply elbow is resistant to cracking, ensuring long-term reliability. The 201 stainless steel decorative plate adds durability with a scratch-resistant surface, offering both functionality and style Corrosion-Resistant Design: With a 24-hour salt fog test certification, this wall-mount supply wall elbow is built to withstand the humidity of bathroom environments