(FERS010-04) Knives for portable machine Hitachi. Length Width Thickness Code 82 28 3.0 HSS FERS0812 82 28 3.0 HM FERS0820 92 30 3.0 HSS FERS0816 92 30 3.0 HM FERS0822 156 31 3.0 HSS FERS1589 168 28 3.0 HSS FERS1583 168 18.5 3.0 HSS FERS1122 168 18.5 3.0 HM FERS1536