Dam this thing is gigantic.
And for £150 shipped that is quite impressive. I just hope it lasts long enough though.

Been talking with Moleroda Finishing and they are suggesting 10-20mm media.
10mm being higher chance of getting into the button holes I have so went for that.
Should arrive tomorrow and will get to tumble all day :)

Thanks for all the help guys.
Hopefully will come back with good results.