The 3mm works with all the larger handmade stuff and now these 2mm will fit all the OEM as well as the Isofrane rubber.
I have made tangs to suit normal straps, but when I return from my holidays, I will work on the isofrane tang to suit these. I have drawn the part, but no doubt it will have some tweaks and need some time to get the right tang, as using the original one will not work on this buckle. But it is not too far off
