FYI - email back from Don on 5mm straps
Hi James,
In 24 x 24 mm. Only have the historic models with dewn in buckles.
F series are 70/110 mm and wear one hole smaller due to the buckle, so might
only need one loop.
Compensated for this in the R series which is 70/115 mm
Both are the same 4 mm thickness. Don't want them to be too thick.
Otherwise they just look odd.
Let me know
Thanks
DON