A.0.043 B.0.43 C.4.3 D.43.0
A.0.05 B.0.10 C.0.15 D.0.20
A.0-0.02mm B.0.02-0.04mm C.0.04-0.08mm D.0.08-0.10mm
A.75% B.65% C.55% D.50%