This is the root hook
This is a tool for loosening roots. It is very thin compared to others.
(How to choose root hook)
There are 3 hook, 2 hook, and 1 hook for loosening the roots, but they are used properly as follows.
For those who carefully untie the roots, or when the roots are firmly stuck and hardened, they use one or two claws.
For speed and not very dense roots, they use three claws.