from Fude Kyun
Comparison of other powder brushes
Chikuhodo Z-1 has a shorter hair length at 45 millimeters while the Fude Japan/Kyureido Face Brushes are 50 millimeters.
The Z-1 is a round bullet shape and is more tightly bundled compared to the diamond-shaped Fude Japan/Kyureido Face Brushes that are fluffier and more airy feeling.
https://www.youtube.com/watch?v=prEd5eh6l3o