The problem with buying these is that there are models that differ by just a small amount, and there’s really no way to tell until you receive it. The other is that there are U2 and U3 models, but it can be difficult to tell what makes one or the other. Then there is the choice between collets. Deckel style, R-8 and 5C, Deckel being the smallest and 5C the largest. You really have to do some research before buying one of these things.
![Lp. Сердце Вселенной #60 РОЖДЕНИЕ ЛОЛОЛОШКИ [Финал] • Майнкрафт](http://i.ytimg.com/vi/YoR0pAV9FVQ/mqdefault.jpg)
The problem with buying these is that there are models that differ by just a small amount, and there’s really no way to tell until you receive it. The other is that there are U2 and U3 models, but it can be difficult to tell what makes one or the other. Then there is the choice between collets. Deckel style, R-8 and 5C, Deckel being the smallest and 5C the largest. You really have to do some research before buying one of these things.