LED bulb size: 51mm (length) x 16mm (base diameter), with high brightness 5630 33SMD LED, brighter than ordinary incandescent bulbs. Long service life, lasts about 50,000 hours. Suitable for: 1156 BA15S P21W 1141 1095 7506 1156 1156A 1156NA 1073 1093 1129 1141 1159 12088 1259 1295NA 1459 1619 1651 1680 3496 5007 5008 7527 199 2396 3497 631 93 97 97A 97NA. Applies to interior and exterior parts of most cars, SUVs, vans, motorcycles, scooters, trailers, trucks as side marker lights. Brake lights, rear fog lights, position lights, tail lights, clearance lights, side marker lights, and interior lights for motorhomes and caravans. The outer casing is made of aluminum, which improves heat dissipation. Illuminates instantly, effectively preventing rear-end collisions. Easy to install, no modification of the original vehicle routing required; plug and play.