SAVE THIS PRODUCT! I recently bought them for a trip to Colorado. As soon as I got to Berthou Pass, I stopped to put them on to prepare for crossing the mountains, before half a mile passed, the first broke off. He stopped again and about a mile later another one followed. This went on until all 6 parts were completely torn off. The plastic freezes and begins to decompose. Of course I wanted to save some money but should have invested in a more expensive product. Now I have dents and scratches on my car. I wish I could give this product ZERO stars. This product is garbage.