Feature●(Pack of 2) 921/912 LED replacement bulbs, voltage: DC9V-30V, each 921 bulb powered by 9 pcs CSP chips, bulb body material: aviation aluminum●921/912 LED backup reverse light bulbs: about 2000 lumens each 921 led bulb, color temperature: 6500K. Bulb bottom diameter: 3cm (1.18in), wire length: 3.6cm (1.41in), bulb body height: 4.85cm (1.93in)●Plug and play design, suit for socket: T15, 912, 921, 906, 904, 902, W16W, etc, used for backup reverse lights only, ideal for customers who are looking for a super bright white led reverse light bulb●With CSP LED chipsets, higher stability, better for heat dissipation and achieve maximum light efficiency comparing with ordinary LED chip. Aviation Aluminum material for rapid heat dissipation, water-proof IP65, shockproof, life span up to 50,000 hours●Amazon filter system may not be 100% accurate, the bulb size may vary between trim of your vehicle.Please double check owners manual or original bulb size to confirmDescription