Cea mai ușoară: NC10, NW10 Lumină: NC15, NC20, NW13, NW15, NW18, N4, C4, C40 De la ușoară la medie: NC25, NC30, NW20, NW22, NW25, N5, C3.5 Mediu: NC35, NC0, NC4, NC4, NC4, NC4, NC4 NW33, NW35, C4.5, C5, C5.5 Mediu până la adânc: NC43.5, NC44.5, NW40, NW43, NW44, NW45, C8Adanc: NC45, NC46, NC47, NCW50, NW46, NW550Ri,:, NC60, NC65, NW55, NW58