These are the basic strap lengths for men's straps:
Short- 12 o'clock element=65mm, 6 o'clock element=105mm
Regular- 12 o'clock element=75mm, 6 o'clock element=115mm
Long- 12 o'clock element=85mm, 6 o'clock element=125mm
Of course, you can special order a strap to whatever length you may need.
Hope this helps.
Whit