No. 12 with collar - Punch guide bushings

Ordering Example
Compass = 12
Special Material = 9
d1 = Ø 5 mm = 0500.
L = 25 mm = 025
Numero d’ordine = 12.9.0500.025

Material: Special steel
N° d’ordine: 12,9
Hardness: 60+-2 HRC