Faced with a leak in a faucet, I surprisingly found this product at Amazon. The description of the cartridge is very brief and it's unfortunate because it puts doubt on its possible adaptation. Ultimately this cartridge proved perfectly compatible to replace mine and I would not be surprised it comes from the same supplier elsewhere. Its price is also very reasonable compared to the market. Note that the dimensions given are those of the box (damage) but the diameter of the shaft is 40mm. When the System Klick Klack it actually refers to the existence of a stop to stay in economy mode with your lever. Exceed this stop to switch full flow.