Some folks were having trouble with microcentrifuge a.k.a. eppendorf tubes escaping the rotor of their dremelfuge. I compiled a handy list of dimensions for the tubes we have at BOSSLAB, and stuck it a PDF. I might have to build a dremelfuge now.
The brands and sizes measured are:
Carolina biological colored tube- 1.5ml
Eppendorf- 1.5ml
ABI Geneamp tubes- .5ml
Biologix flat top PCR tube- .2ml
AyLo 