About this article. [80W 8000Lm/set (2pcs 40W)] 3 inch 40W lamp, illuminated by high quality 10W LED chips, spot beam: large spot reflector cup, allows for longer illumination range and better visibility. Helps reduce traffic accidents caused by bad weather or poor road conditions. Ensure driver safety. Rugged Design: Aluminum alloy housing, steel mounting bracket, high light transmission optical PC lens, durable to withstand any harsh conditions. Fast Cooling System: High quality aluminum alloy casing and vertical fin design suitable for better heat dilation. When the light bar is working, it can conduct heat into the air for the first time. Let the life of LED lights last longer. Easy installation, small size and adjustable mounting bracket: approx. 7.6cm x 5.6cm x 9.