K0
K1
K2
K3
K4
K5
K6
Extra Fine
28~40
15~50
28~40
15~50
Fine
40~60
50~60
50~60
40~60
30~60
Medium-Fine
60~80
60~90
60~80
60~90
Medium
80~100
80~120
90~120
80~100
90~120
Coarse
140
150
140
150