LED:H11X20 | H11 X20 series LED headlight bulb kit, 12,000 Lumens per bulb,� 12,000 lumens per bulb, Base diameter 34.5 mm, 55 watts, Operate on 9 to 32 volts DC, 6500k. Kit includes 2 LED bulbs, 2 High Performance LED Drivers, mounting kit and product guide. Not recommended for use in 2014-15 Silverado Low beam due to clearance issues with the cap. Not recommended for 2009-18 Ram due to clearance issues, use H11F3 instead. �