2pcs Best Ridiculously Bright Samsung Ice Blue 9-SMD LED Light Bulbs Interior Dome Trunk Map Reading Light Bulb 42MM Festoon 211-2 578 569 579, 212-2, 214-2 L174 (Set of 2 Bulbs) - High Quality 9 SMD PREMIUM LED Chips per bulb, These efficient light bulbs operate within a wide 9v-30v Voltage; light bulb Size: ~ 42mm long x 12mm wide (~ 1.7" x 0.5") Replacement for or Fit: 4210, 6451, 6411, 560, 569, 578, 211-2, 212-2, 2112, 2122 or 214-2, DE3423LL, DE3424, 13050, DE3425LL, and DE3425 bulbs Application/Used for: licence plate light, turn signal light, Side Marker Lights, Side Door Courtesy Lights, Interior Map Lights, Dome Lights, Parking Lights, tail light, backup lights, City Lights, reading light, Cargo Lights, Corner Lights, Trunk lights, Malibu Landscape Lights etc. Light color: ice blue Advantage: Non-polarity design, Compatible for both CK/SRCK and Standard socket. So much brighter than original halogen bulb, full Aluminum Housing with Projection lens for Maximum Light output and better heat distribution, built in Constant Current IC for Longer life span & Low Power Consumption.