20 Pieces T10 W5W Light Bulb Extension Socket Holder Soft Rubber Push-in Wedge Base Pre-Wire Lead length: 14cm Note: The plug of bulb with positive and negative poles. If the bulb can't be lighted, Please try to plug in different direction. It's compatible with 194, T10, W5W, 147, 158, 152, 159, 161, 168, 184, 192, 193, 280, 259, 285, 447, 464, 555, 558, 585, 656, 655, 657, 1250, 1251, 1252, 2450, 2652, 2921, 2825 type LEDs. It can be easily installed. Just plug in and play. It can be used for wedge light, door light, reading light and license number light installation. 20 Pieces per lot