CARBO F-S 1
G,S
MF20-GF-55-CGTZ
52-55 HRC
CARBO F-S 6 F-S 6 L F-S 6 H G,S
MF20-GF-45-CTZ 40-43 HRC 36-39 HRC 43-46 HRC
CARBO F-12
MF20-GF-50-CTZ
45-48 HRC
CARBO F-21
MF20-GF-350-CKTZ
275-325 HRC workhardened ca. 45 HRC