ISO 26623 For shanks in accordance with DIN 6535 HB
C3-A391.20-09050, C3-A391.20-12055, C4-A391.20-12 055A, C4-A391.20-15 055, C4-A391.20-16 060, C4-A391.20-19 060, C5-A391.20-09 055, C5-A391.20-12 060, C5-A391.20-15 060A, C5-A391.20-19 060, C5-A391.20-25 085, C5-A391.20-31 085, C6-A391.20-09 060, C6-A391.20-12 060, C6-A391.20-15 065, C6-A391.20-19 065A, C6-A391.20-22 080, ...