[quote=NormK]The Deutscher blades are so tough they don't wear much and you can just turn them over and use the other side. At this rate you are going to end up very fit[/quote]

haha who says I'm not already? ;-) Yes, I've a spare set of new ones too

These are the blades it's currently utilising, which are the official size:
https://www.ebay.com.au/itm/204339677610

[quote=NormK]I will go and measure them Max[/quote]
Agh! I don't want Norm out having to measure such things, let me shoot down to the shed and come up with some numbers. Uno momento.