This 40 pack version of Hario filter has rough surface for both inside and outside, which leads to a faster flow rate compared to Hario filter 100 pack version.
01 size for Hario V60 01, Hakka-Life Six Ridges, Sakura Dripper, Origami S and other similar size drippers.
02 size for Hario V60 02, Origami M, Loveramics dripper and other similar size drippers.
40 pcs per pack