When piping becomes old, it rotates in the wall and it is used for repairing. Without this, drivers have to scrape off with Kochokocho, it is a hard time and it takes a lot of time and burdens the customers as well. It is more convenient to share 15A and 20A, but it is good because it is inexpensive as it is almost 15A.
The goods arrived the day after ordering. The next day, there was a request for repair, I used it at once. As for the old Salvo, because the inner diameter is "◯", it was a serious work to remove when it broke up so far, but if you use this inner diameter wrench it is one shot. We also bought two and are handed over to another emergency responder. Convenient!