Misumy linear rails

[Desertboy]

I need 2* 3m lengths and 2* 1.8m lengths for my next project I do like the look of these and they do seem a good bit cheaper than hiwin on alixpress although of course with alixpress it's always a bit of a gamble.

They do look the business though, I wonder at the size I'm going how big I should get the rails?

I bought a set of these for my first cnc machine and I already know they're too small (15mm) but they will have to do for now
http://www.ebay.co.uk/itm/1224336753...%3AMEBIDX%3AIT

Insanely cheap though and seem good quality certainly for the price, they came from Germany as well so delivery time was only 3 days, no import tax and was packaged very well.

As for packaging I've not had any problems with ballscrews and linear slides from China but I'm probably lucky I make a point of using the same supplier as I know they package everything well and send it fedex which I've never had issues with.