Product review (5 stars): Excellent
I found it difficult to find 1/4" PEX tubing for a icemaker line at my local box stores.  They had the regular plastic but that is known to burst so I was on the hunt for PEX which is a much stronger material and used for in wall plumbing.  I opted for PEX over a braided stainless steel as I was told that could corrode with the chemicals typically kept under the sink (though I have not had that problem in the past).

Although not evident by the picture, the ends of the tube have barbs / flares so the nuts don't fall off - it screws on to the standard fittings.  This was a relief as I was not sure until I received it.

Like other PEX tubing, it is very stiff and wants to roll back into a circle.  If you install this make sure you have some way of securing it to the wall / cabinet as it will make installation easier.

On another note, PEX is sensitive to UV light so it must not see direct sunlight or even florescent lights so I am told as it can develop leaks.

Water tastes fine and there are no leaks after several months so 5 stars for this one.