Tuning Hatsan Flash O-rings

I’ve got a couple of big organizers full of standard and metric. I’ve got everything covered from 001-118 and then a good selection of .5, 1, 1.5, and 2mm cross section metrics.

I’d just like to know if there are any odd ball decimal sizes like FX uses so I’m not sitting waiting on something.



I appreciate everyone’s input. Thanks y’all.