LED headlight 12 Volt non polarity for both positive or negative ground. Up to 1300 Lumens total or 100 CP, 650 per filament or 50 CP per filament. The bulb fits standard RP 30 and RP 35 bulb applications. Long life up to 30,000 hours, low led light decay. Comparable to a 55 to 65 Watt incandescent. Dim-able using a variable voltage supply. Fits standard BA15D 15mm base, two same height bayonets and two contacts. The leds are aligned with your reflector for maximum light output. Availabe in white 6000k and warm white 3000k. Great for Model A and Model T fords and older classic and vintage automobiles, trucks and motorcycles.