1157 Bulb LED BAY15D Base 12 Volt 2.6 Watt. Works either positive ground or negative ground. Long life up to 30,000 hours. Up to 24 CP. Has dual filaments a brake light and tail light. Up to 320 Lumen for brake light and 240 Lumens for tail light. Dim-able with variable voltage supply. Available in White 6000K, Warm White 3000K, Red, Green, Blue and Yellow. One of the bayonets is offset. Comparable to a 20 to 25 Watt incandescent bulb. The approximate size is 1.47" long. The approximate diameter is 0.78". The BAY15D base is 15mm diameter, with offset bayonets and two contacts on the bottom. CE and Rohs. Compatible with: ge 2357f, 1964 Morgan Plus 4 Car