These Rigid Industries Q-Series LED Lights are a combination between their 4 Dually / and D2 Optics. They are combined into one large housing. It is equipped with a vibration isolator and 304 stainless steel bracket. This is made with some of the strongest materials that can take a beating while providing you with a high quality light source. The kit includes a plug and play harness with a switch, as well as a mounting bracket and hardware.