Paper
Grit Symbol
Mesh
Micron
4/0
1200
6.5
3/0
1000
9.2
2/0
600
16.0
0
500
19.7
#1
280
44.0
#2
220
64.0
#3
180
79.0
Cloth
< 3/4″
150
95.0
> 3/4″ – 2-1/2″
100
136.0
> 2-1/2″ – 3-1/2″
80
189.0
> 3-1/2″ – 5″
50
341.0