Overall they are pretty good and the colors match the original Gravitrax color balls well. The paint coating on the red ones will chip off quite a bit. The color coating on green and blue is perfect. I assumed their chrome finish was painted, but at least the red ones aren't. The layer of paint applied to red tones appears brittle and does not adhere well. Colored Gravitrax balls are hard to come by, so if you don't mind red chips this is still a great buy. Photos, all red chips, but the number of chips is different.
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