Material: T-type valve adapter made of high quality solid brass, chrome plated surface, beautiful appearance, durable, long-term use. Connection Size:The thread of the bidet shut off valve is 7/8"X7/8"X1/2". the 7/8" male thread is used to connect the water supply hose, the 7/8 " female thread is used to connect to the toilet tank, and the 1/2" thread is used to connect the handheld Spray hose, or connection 1/2" X 3/8" adapter for 3/8” bidet toilet seat attachment connection. Easy installation : The toilet T-valve is easy to install, and the wrench nut can be installed even if you are in a narrow space without additional tools. The kit comes with a tapered leak washer that is more sealed and leak-free than a flat pad. Easy to use:Used to turn off the water flow when not in use and adjust the water flow to your needs. turning off the switch will not affect the water flow of the toilet tank. The valve only controls the water flow of the hand-held sprayer. Note: The T-valve is only applicable to the bathroom and cannot be connected to the shower or faucet. We provide detailed instructions, read them carefully before installation, you can easily complete the installation yourself. Our Toilet T Valve is made of high quality brass, brass has the advantages of strong pressure resistance and corrosion resistance, which can ensure the quality and service life. The surface is chrome-plated, so you don't need to worry about fading and can keep its exquisite appearance. The thread of the bidet shut off valve is 7/8"X7/8"X1/2". the 7/8" male thread is used to connect the water supply hose, the 7/8 " female thread is used to connect to the toilet tank, and the 1/2" thread is used to connect the handheld Spray hose, or connection 1/2" X 3/8" adapter for 3/8” bidet toilet seat attachment connection. Note: The T-valve is only suitable for the toilet and cannot be connected to the shower or faucet.