Sanit flush valve for concealed cisterns (with small access opening) 983N and 983C.
Made of plastic or copper with the ceramic disc inside, brand new and high quality.
There are 2 different materials copper or plastic ceramic faucet valve and multi-size for you.
If you got a leaking tap, this replacement ceramic cartridge may be just what you need.
These ceramic types can avoid water leakage and save water efficiently.