Hella Vision Plus 5.75 inch Round High/Low Beam Conversion Headlamp KitHELLA's Vision Plus conversion headlights adapt European technology to US lighting standards and driving conditions to produce superior headlight units that replace your dumpy, ineffective old 5 3 4 in. round or 146mm rectangular headlights. They produce the brightest, most powerful light possible right at the legal limit without increasing glare. More importantly, their precise optics produce a much longer, wider, larger, and better illuminated pool