T25 base style.
1156 single contact is used for turn signals.
1157 dual contact is used for tail light/ brake light.

Description:
Dual Pin Connection;
20 FLUX LED;
Available in super white, red, yellow and blue.
Extremly bright for cars with high reflective;
Brake lamp housing - 15 LEDs shine sideways and 5 LEDs shine directly back;
These LED tail / brake light replacement bulbs fit in every BAY15D series dual pin bayonet fitting found in most applications for 12V automotive lighting;
Also for motorcyle LED tail lights ( single bulb).

Features:
LED lights uses 80% less power than incandescent bulbs;
Durable, shock, vibration proof, instant On/Off.
Monochromatic (pure) color, low heat