As the product name advised, the ribs of this dripper is a unique flower shape. This special radial rib design allows coffee to bloom freely and make it possible to control the flow rate on this dripper. When the water level reach 70% of the dripper, the flow rate becomes slower since the distance of each rib is far away; then the flow rate will become faster as the water level goes down. You can play around with the flow rate to find your own flavour.
Fits with 02 size cone-shaped filter.
Material: Ceramic (Arita-yaki)
See here for more information.