Great little attachment. I'd say it's best used for regular sized paint cans from the hardware store or small epoxy pails. If you need to mix something larger like a 5 gallon paint bucket, this will work but will take some more effort. Photo shows the medium 49mm variant printed in white PLA. For anyone in Canada/US whose hardware stores primarily carry things in imperial, 5/16in dowels are about the same as 8mm. I used a 4-40x3/4in screw to affix it, 10-32 would also work but of course larger diameters and more threads risk splitting the wood. Pre-drill a hole if you can.