This TriOptic™ Lens Kit for D3 driving lights is designed to maximize visibility in foggy and rainy conditions. The lens colors increase visibility in fog and rain by blocking blue frequencies from the light, which reflect off water vapor and decrease vision. The kit includes two spot lenses and two True-Hybrid™ lenses. Use two spots for maximum distance, two Hybrid lenses for a 50/50 True-Hybrid™ or one of each to create a Spot-Hybrid that adds some additional close range fill while maintaining distance. What’s In The Box? 2x D3 Spot Lenses (Yellow) 2x D3 True-Hybrid™ Lenses (Yellow) *Note: This D3 TriOptic lens kit is only compatible with the D3 TriOptic light and is not compatible with the D3 Fog light.