I bought the new/replacement lens set for my Westin running boards since I just bought this used Sequoia and it only had 3 lenses. Online they looked the same, but when I received them they where slightly different. My old lenses where large enough to have an outer lip that acted as an opposing hold to the inner clips; the new lenses merely fit snug, but could be pushed through the opening if someone felt the need to meddle with another persons vehicle. I had to carefully install them to be as sure as possible, that my new lenses wouldn't fall out too easily. Overall, pleased with my order.
Disclaimer: The new lenses are bright because of the LED bulbs I bought.