Pair 3157 42-SMD Xenon White Led Car Backup / Back Up Reverse Light Bulbs 3156 3057 Size: 20 mm diameter, and 53 mm long, Life Span: 80000 Hours Average Lifespan Best Performance Guaranteed. Easy to Install, Direct Replacement for Your Stock Bulbs. 100% Safe to Use on Vehicles and Boats. Low Temperature, Low Power Consumption. Manufactured in ISO 9001:2000 Certified Factory. Made with Highest Quality Material. Amazing Super Bright Lighting Output. FREE Shipping - USPS 2-5 Days (U.S. Only), Package will ship out same business day before 3pm. We offers a 60 days no hassle warranty.