I noticed numbers 1 and 2 on one side and 3 and 4 on the other of the blade. What is the meaning of these numbers on Astra SP DE blades? If any.
Yeah, it hasn't kept me awake at night.Haha, I think I asked the same question on this forum years ago. Unfortunately it was in 2014 and my history doesn't go back that far when I check my profile!
In any case you can safely ignore them. If I remember they are just for the manufacturing process in some way...
If I remember they are just for the manufacturing process in some way...