Kansai Retired Carpenter's Metate Hammer Set

I purchased these from the descendant of a retired carpenter near Osaka. They have some rust from being stored in a warehouse for a long time, but they are all in fully working condition.

The height of the hammer and its weight（including the handle), from left:

1. 120mm, 143g
2. 60mm, 49g
3. 83mm, 214g
4. 98mm, 119g
5. 52mm, 81g