For you guys that may not have heard of them.... I played with one on Friday... wound up buying all 3 sizes. (1, 2 and 4mm wide)
The surface you used them on needs to be SMOOTH, I forgot to take pics, but this stuff looks just like real chrome.
Several Hobby shops I know of, are having a hard time keeping them in stock.
Section 8 Hobbies has them in stock (where I got mine and his current display box was almost full)