Grit size
CBN contents, %
Marking
CBN weight in carats in one 100 gr tube
125/100 and higher
NOM, POM
50/40 – 100/80
60/40 – 40/28
20
MNO
100
40
MPO
200
60
МVО
300
28/20
10
50
20/14 – 14/10
8
10/7- 7/5 – 5/3
6
30
3/2
4