【Product Dimensions】: 3.94 x 0.57 x 0.4 inches (100.2 x 14.9 x 10.1 mm). 9 high quality SMD LEDs, 50,000 hours lifespan, brighter than stock side lights. [Material]: Made of ABS plastic shell + PC lens + IP67 waterproof, dustproof and shockproof. [Installation]: Black is negative pole, red is positive pole. The mounting hole spacing is 83mm. 2 holes for screw mounting. Install regularly. 【Application】: Side marker lights, front and rear marker lights, LED trailer lights, position lights, clearance lights, warning lights, license plate lights, warning lights for most vehicles/cars/trucks/motorcycles/trailers/boats/caravans, etc. 【Package Included】: 10 x blue side marker lights, some mounting screws.