15/16inch (also match 7/8inch) connect to the toilet tank, 9/16inch (also match 3/8inch) connect to metal bidet hose, 15/16inch (also match 7/8inch)connect to the water supply hose. ✔ Universal Compatibility – 15/16inch (also match 7/8inch) connect to the toilet tank, 9/16inch (also match 3/8inch) connect to metal bidet hose, 15/16inch (also match 7/8inch)connect to the water supply hose.(This bidet T was a perfect fit to connect the bidet inline with the tank inlet) ✔ Better Than Plastic - Featuring a durable brass body with a polished nickel finish, this piece is designed for exceptional corrosion resistance and enhanced durability. ✔ Widely Application - This Bidet T Adapter can be used for a variety of purposes, including toilet faucets, shower head splitters, valve hose fittings, and more.( 1Pcs Bidet T Adapter + 1Pcs Sealing Gasket) ✔ One in two out design - This Bidet T Adapter allows two water outlets to be connected to one water source, which makes it easy to use. ✔ Easy to Use - The Bidet T Adapter simply connects to your toilet's water supply line and can be easily adjusted to fit any standard size.