Description: Smoke tint lens during the day，Clear and bright LED display during the night.Add a racing look and feel to your ride，High quality and light weight.Power: DC 12VRed LED illuminated needles.LED super white display.Diameter: 2"/52mm.Easy Installation With Users Manual In English，Professional installation is Highly Recommended. Package Include:1 X Boost Gauge1 x Nylon Pressure Line(2m) With One Adaptor1 x Users manual In English