I bought two identical pieces to be the size of a regular light bar, overall I'm very impressed. The light pattern changes are real and I've driven it about 80mph on the roof and the magnets work fine. I will say that the height of the lights is not very high, especially if you have a truck or SUV. SUV, putting them in the middle is pretty silly, you will want them either on the back or front on the roof or maybe mount them on another stand that has a bit more clearance.
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