by pemlock » 19 Jun 2021 2:38
As Gordon says, whether the pick is constructed with metric och US units doesn't matter, it's just thicker and thinner picks.
There are two common thicknesses for picks: 0.025"/0.6mm and 0.015"/0.4mm. (There are others, less common, as well.)
It's not exact conversions, but close enough.
I'm in Europe and have picks from both Sparrows and Multipick, and pick most of my locks with the thicker picks. Although European locks are said to have narrower keyways, older locks and padlocks (which are made in China anyway) often have quite wide keyways. I bring out the thinner ones only when I have to.