This maybe a silly question but I don't have the right information so I will throw it out there anyway. I have seen some very nice straps made by oversea straps makers in countries like china and Vietnam. The problem is those strap don't have holes punched by default so you suppose to provide that information so they can punch the holes for you. My questions is how do you correctly telling these strap makers the specs of those holes and the distance between holes specially for IWC, Omega, Panerai and Breitlling?