AMERICAN STANDARD THREADS - Standard U.S 1/2 NPT Tapered Threads. Fit for most of universal fixed shower and handheld shower head. RELIABLE MATERIAL - Voolan shower arm is made from high-quality 304# stainless steel to ensure it is rust-proof, leak-proof and durable. HIGH PRESSURE - Say goodbye the other low pressure shower arms, our extension pipe arm maintains your shower’s water pressure. .We know a leaky showerhead can ruin your shower experience, but this shower head extension arm is guaranteed to keep your water flow steady.Provide a powerful rain shower for your home. MODERN LOOK - chrome/brushed nickel/matte black, multiple colors available to create a modern and luxurious feel to your bathroom decor. QUICK INSTALLATION - Teflon tape is included, making installation very easy and completed in minutes without the need to call a plumber.