From Wikipedia: 10 micrometres (0.00039 in) to 1 millimetre (0.039 in) I was shocked to learn how small a microbead is I was expecting a few mm maybe 1mm but 0

From Wikipedia: 10 micrometres (0.00039 in) to 1 millimetre (0.039 in) I was shocked to learn how small a microbead is I was expecting a few mm maybe 1mm but 0.01mm holy crap that's incredibly small.