
Ordered sone ER25 collets and a MT2 collet chuck off eBay. It all came today, fairly nice quality for the cheap price but the chuck came tapped for a 3/8 drawbar not an M10.
My fault really as I assumed it would be metric as all the sizes were listed as metric, it didn't state the drawbar size though.
I messaged the seller suggesting they might put the info in the description, and asking if they have a metric one to swap. Just wait and see what they say. If they can't I'll just keep this one for the boxford lathe and make a bar for it, then order the correct one for the mill.