I thought about trying to replace the cartridge because I was concerned about a slight water leakage of the mixing faucet. Even if the faucet main body was not finished as a product and it was not listed in the catalog an examination of the repair item also did not understand clear conformity. Although I decided to purchase by comparing it with the one of the present one, I was slightly uneasy because there was a slightly different shape of the upper part. However, it fitted without any problems, and the water leakage disappeared. The lever also got better with movements that are more responsive than before.
Because it was different from the cartridge attached to our house, I inquired to the manufacturer that it changed to this type by change of part number. I could purchase it cheaply from my home center at all.