This page explains what those numbers mean. Personally, I find it all very confusing and would probably just contact the seller rather than trying to figure it out myself. If they don't know what it would be in hand-knitting terms, ask them to measure the WPI (wraps per inch) for you to get an idea. Info
here.
My guess is that it's pretty fine, but you can always use multiple strands to get the gauge you want.