With seven-inch round, five-by-seven inch and four-by-six inch rectangular lights, you can replace your existing lights with the durable, long-lasting LED lights Grote is famous for. The LED technology helps reduce eye fatigue and provide better visibility, thus improving driver safety. These 2B1, 2D1, and 2E1 head lighting systems have a 3 pin, H4 connector and are legal and DOT compliant.