Wall connection: 16mm external thread. A good beer, wine and beverage dispenser. Made of SUS304 stainless steel, to ensure reliability. Lead-free, to ensure health Easy to install The beverage dispenser faucet is made of 304 stainless steel of the highest quality, lead free and will not rust. Using the most advanced CNC machine workmanship and high quality silicone, 90 degree rotating ball valve for excellent sealing and wear resistance. Paired with a screen washer to prevent the container from being blocked. Now enjoy the party with your family and friends Product Name: Drink Dispenser Faucet Finish: Polished Stainless Steel Please confirm the size of the faucet and your drink dispenser carefully before ordering. The thread diameter is 16mm, we recommend the installation hole on your beverage dispenser is 16mm-20mm.